Sunday, 31 January 2021

Is online learning a boon or bane?

Is online learning a boon or bane?



Personally, I don't like...means I hate online classes. No meeting with friends...etc. etc.
An online class is more hectic than an offline class. Though there are some advantages... 

In Offline classes we would be late if we would miss the bus,

But in online classes, we will never get late, if such if the internet connection is stable.

In offline classes, we would not miss anything, but in online classes, we miss a lot of important things if we get logged out.

Online assignment is very painful for eyes, but the offline assignment is very friendly for our eyes.

Online classes are very bad for kids as ultra-violet rays damage their eyes.

In online classes, if we forget to sit with the books, we could run and fetch them, but in offline..... all of us know (guardian call).

Nowadays, we don't have to travel by bus, train or by any transport system, which is very helpful for our mother earth, Just we have to walk away to the room.

Offline class notes would be very boring, but online notes are a cakewalk. 

In offline classes, we would hesitate to clear our doubt in front of the class, but now we can clear our doubt through online resources or we can write to the teacher about it personally.

Now we have learned a lot of technology....for this online thing, but we miss our sweet golden times with our friends.

I hope we would return to normal life soon... Let's pray for that.

Write down below, to you, online class.....boon or bane.  Also, write the disadvantages or advantages.....in the comment box.

THANKYOU

AHONA SARKAR





Thursday, 28 January 2021

10 most interesting facts about the world (part-2)

10 most interesting facts about the world (part-2)




The world's most densely populated island is the size of two soccer fields.

Santa Cruz del Islote in the Archipelago of San Bernardo off the coast of Colombia may only be about the size of two soccer fields (AKA two acres), but the artificial island has four main streets and 10 neighborhoods. Five hundred people live on the island in around 155 houses. With so many people packed into such a small space, it's the most densely populated island in the world, according to The Guardian

The Canary Islands are named after dogs, not birds.

It might seem safe to assume that the Canary Islands were named after canary birds, but the location was actually named after dogs. Although it's off the coast of northwestern Africa, the archipelago is actually part of Spain. In Spanish, the area's name is Islas Canarias, which comes from the Latin phrase Canaria Insulae for "island of dogs." World facts related to dogs? Now those we can get behind!

Indonesia is home to some of the shortest people in the world.
Though there are short people and tall people everywhere, Indonesia is home to some of the shortest people in the world, according to data compiled from various global sources by the Telegraph in 2017. When taking both genders into account, the average adult is around 5 feet, 1.8 inches. People in Bolivia don't tend to be much taller, with an average adult height of 5 feet, 2.4 inches. The tallest people among us live in the Netherlands, where the average adult height is 6 feet.

The Paris Agreement on climate change was signed by the largest number of countries ever in one day.

When 174 world leaders signed the Paris Agreement on Earth Day in 2016 at the United Nations (UN) headquarters in New York, it was the largest number of countries ever to come together to sign anything on a single day, according to the UN. The agreement aimed to combat climate change and accelerate and intensify the actions and investments needed to strengthen the global climate effort.

The world's quietest room is located at Microsoft's headquarters in Washington state.


Silence is golden, as they say. And while it may not be worth quite as much like jewels and gold to most people, it certainly was the primary goal for those who built the quietest room in the world. Located at Microsoft's headquarters in Redmond, Washington, the lab room measures a background noise of -20.35 dBA, which is 20 decibels below the threshold of human hearing and breaks previous records for spaces that were deemed the planet's quietest places, according to CNN.

Sunday, 24 January 2021

10 Most Interesting Facts About the World (part-1)

 Most Interesting Facts About the World



Hi friends, today I'm going to tell you the most interesting facts about the world. Some are weird while creepy or funny. Let's get started!

1North Korea and Cuba are the only places you can't buy Coca-Cola.

No matter where you go, it's comforting to know you can always enjoy a Coca-Cola. Well, almost anywhere. While this fizzy drink is sold practically everywhere, it still hasn't (officially) made its way to North Korea or Cuba, according to the BBC. That's because these countries are under long-term U.S. trade embargoes.

However, some folks say you might be able to snag a sip of the stuff if you try hard enough (although it'll typically be a lot more expensive than what you would pay in the states—and probably imported from a neighboring country such as Mexico or China).


2)The entire world's population could fit inside Los Angeles.


The world's total population is more than 7.5 billion. And obviously, that number sounds huge. However, it might feel a little more manageable once you learn that if every single one of those people stood shoulder-to-shoulder, they could all fit within the 500 square miles of Los Angeles, according to National Geographic.


There are more twins now than ever before.

You might think twins are a rarity, but they're actually becoming more common than ever. "From about 1915, when the statistical record begins, until 1980, about one in every 50 babies born was a twin, a rate of 2 percent," writes Alexis C. Madrigal of The Atlantic. "Then, the rate began to increase: by 1995, it was 2.5 percent. The rate surpassed 3 percent in 2001 and hit 3.3 percent in 2010. [That means] one out of every 30 babies born is a twin."

Scientists believe this trend is since older women tend to have more twins, and women are choosing to start families later. Fertility treatments such as in-vitro fertilization likely also play a role.

The hottest chili pepper in the world is so hot it could kill you.

The "weapons-grade" Dragon's Breath chili pepper is so hot it's downright deadly. If you ate one, it could potentially cause a type of anaphylactic shock, burning the airways and closing them up.

"I've tried it on the tip of my tongue and it just burned and burned," said Mike Smith, the hobby grower who invented the Dragon's Breath along with scientists from Nottingham University. So why make such an impractical pepper? As it turns out, the chili was initially developed to be used in medical treatment as an anesthetic that can numb the skin.

5
More people visit France than any other country.

France is a beautiful country, filled to the brim with delicious wines, scrumptious cheese, and tons of romance. So it's no surprise that more people want to visit France than any other country in the world, according to the United Nations World Tourism Organization.

In 2017, the European country welcomed 86.9 million people. Spain was the second-most popular destination with 81.8 million visitors, followed by the United States (76.9 million), China (60.7 million), and Italy (58.3 million). La vie est belle!

I hope you liked my blog....don't forget to share and comment down below..

thankyou, coming with part-2


Friday, 22 January 2021

Exploring the Looming Water Crisis

Exploring the Looming Water Crisis




Water scarcity is the lack of sufficient available water resources to meet the demands of water usage within a region.

Thursday, 21 January 2021

BTS ROCKS

 BTS   LOVE


BTS (Korean방탄소년단; RRBangtan Sonyeondan), also known as the Bangtan Boys, is a seven-member South Korean boy band that began formation in 2010 and debuted in 2013 under Big Hit Entertainment. The septet—composed of RM, Jin, Suga, J-Hope, Jimin, V, and Jungkook—co-writes and co-produces much of their own output. Originally a hip hop group, their musical style has evolved to include a wide range of genres. Their lyrics, often focused on personal and social commentary, touch on the themes of mental health, troubles of school-age youth, loss, the journey towards loving oneself, and individualism. Their work features references to literature and psychological concepts and includes an alternative universe storyline. The group has released several albums and performed on several world tours.


Career

2010–2014: Formation and early years

BTS in 2013 performing at the Incheon Music Center.

BTS began its formation in 2010 after Big Hit Entertainment CEO Bang Si-hyuk met with group leader RM and was impressed with his rapping. BTS was originally supposed to be a hip-hop group similar to YG Entertainment's 1TYM, but between their initial formation and their debut, Bang Si-hyuk decided that the contemporary youth needed instead "a hero who can lend them a shoulder to lean on, even without speaking a single word". The group was meant to debut in 2011 and featured on several tracks by artists such as 2AM and Lee Seung-gi before their debut was postponed and the group was reorganized into a more traditional idol group. The lineup was then finalized with Jin, Suga, J-Hope, RM, Jimin, V, and Jungkook in 2012. Six months before their debut, they began to gain attention for their presence on various social media websites, as well as song covers 

..on YouTube and SoundCloud


2014–2015: Moderate success and first concert tour

The exterior of the nightclub Troubadour (photo was taken 2006) where BTS held their first concert in the United States for free.

The last act of their "school trilogy", the EP Skool Luv Affair, was released in January 2014 and topped the Gaon Album Chart, selling 100,000 copies in 2014 and over 250,000 copies overall. It also marked BTS’s first appearance on Billboard's World Albums Chart, peaking at number three. The album was supported by the singles "Boy in Luv" (Korean: 상남자; RR: Sang-namja) and "Just One Day" (Korean: 하루만; RR: Haruman), which peaked at number 45 and number 149 in Korea, respectively. While Skool Luv Affair musically retained much of their hip-hop influences with the incorporation of R&B and hard rock, the album coincided with a thematic shift from dreams and happiness to love, focusing on school-age and youthful love. Following Skool Luv Affair's release, BTS made several appearances on Korean music shows and held their first fan meeting that March with an audience of 3,000 fans in Seoul. That July, BTS held their first concert in the United States in West Hollywood for free to an audience of 200 fans. In August, the group also made their first appearance at KCON in Los Angeles.

2017: International expansion and collaborations

In February 2017, BTS released the repackaged edition of Wings (2016), entitled You Never Walk Alone. Pre-orders of the repackage reached over 700,000 copies, breaking the record for most albums sold in a month. The repackage included an additional four tracks that offered consolation and encouragement to its listeners. Its lead single, "Spring Day" (Korean: 봄날; RR: Bomnal) met critical praise as "an intelligent, compelling and elegantly restrained study of loss and longing" that "deliberately avoids cliché pomp and drama" by Dazed Digital. Embodying nostalgia and sorrow, it opened a new chapter in BTS' aesthetics and lyricism and attracted fans across generational boundaries. Upon release, "Spring Day" topped eight of the major South Korean online music charts, as well as Gaonand crashed Melon's digital chart due to the high influx of user traffic. It also entered the U.S. Billboard's Bubbling Under Hot 100 singles chart at number 15 with "zero promotions." As evidence of its staying power, "Spring Day" is the longest-charting song on Melon to date. "Spring Day" later won Best Song of the Year at the 9th Melon Music Awards.

2018: Worldwide recognition

n the lead up to their next album, BTS released an original eight-episode documentary series exclusively on YouTube Premium entitled Burn the Stage that ran from March until May 2018, offering a behind-the-scenes look at the group's 2017 Wings Tour. In April, the group also released their third Japanese studio album, Face Yourself, which debuted at number 43 on the Billboard 200 as the third-highest-charting Japanese album in the history of the chart. In conjunction with the release of Face Yourself, the group released a nine-minute short film titled "Euphoria: Theme of Love Yourself: Wonder," which featured the song "Euphoria" and embodied the "起" or "beginning" of the narrative sequence.

2020: Map of the Soul: 7, "Dynamite", and Be

In January 2020, BTS released "Black Swan" along with a choreography art film performed by Slovenian-based MN Dance Company as the first single from their fourth Korean-language studio album, Map of the Soul: 7. Album distributor Dreams reported that stock pre-orders of the album reached a record-breaking 4.02 million, breaking the previous record of 2.68 million held by Map of the Soul: Persona. "Black Swan" debuted at number 57 on the Billboard Hot 100 and number 46 on the UK Official Singles Chart. Later that month, BTS performed alongside Lil Nas X, Billy Ray Cyrus, Diplo, and Nas at the 62nd Annual Grammy Awards, making BTS the first Korean act to perform at the Grammys




Monday, 18 January 2021

Sleeping Beauty..

 WHY DO WE SLEEP?


WE USUALLY DON'T WANT TO GET UP IN THE CHILLY WINTER MORNING, BUT WE WANT TO SLEEP MORE AND MORE UNDER THE WARM BLANKET WITH OUR TEDDY.

WE HAVE A SCIENCE BEHIND IT...SO let's REVEAL IT!


Sleep is an essential function that allows your body and mind to recharge, leaving you refreshed and alert when you wake up. Healthy sleep also helps the body remain healthy and stave off diseases. Without enough sleep, the brain cannot function properly. This can impair your abilities to concentrate, think clearly, and process memories.

Most adults require between seven and nine hours of nightly sleep. Children and teenagers need substantially more sleep, particularly if they are younger than five years of age. Work schedules, day-to-day stressors, a disruptive bedroom environment, and medical conditions can all prevent us from receiving enough sleep. A healthy diet and positive lifestyle habits can help ensure an adequate amount of sleep each night – but for some, chronic lack of sleep may be the first sign of a sleep disorder.

The Science Behind Sleep

An internal “body clock” regulates your sleep cycle, controlling when you feel tired and ready for bed or refreshed and alert. This clock operates on a 24-hour cycle known as the circadian rhythm. After waking up from sleep, you’ll become increasingly tired throughout the day. These feelings will peak in the evening leading up to bedtime.

This sleep drive – also known as sleep-wake homeostasis – may be linked to adenosine, an organic compound produced in the brain. Adenosine levels increase throughout the day as you become more tired, and then the body breaks down this compound during sleep.

Light also influences the circadian rhythm. The brain contains a special region of nerve cells known as the hypothalamus, and a cluster of cells in the hypothalamus called the suprachiasmatic nucleus, which processes signals when the eyes are exposed to natural or artificial light. These signals help the brain determine whether it is day or night.

As natural light disappears in the evening, the body will release melatonin, a hormone that induces drowsiness. When the sun rises in the morning, the body will release the hormone known as cortisol that promotes energy and alertness.

The Importance of Getting Enough Sleep

For most adults, at least seven hours of sleep each night is needed for proper cognitive and behavioral functions. An insufficient amount of sleep can lead to serious repercussions. Some studies have shown sleep deprivation leaves people vulnerable to attention lapses, reduced cognition, delayed reactions, and mood shifts.

It’s also been suggested that people can develop a sort of tolerance to chronic sleep deprivation. Even though their brains and bodies struggle due to lack of sleep, they may not be aware of their own deficiencies because less sleep feels normal to them. Additionally, lack of sleep has been linked to a higher risk for certain diseases and medical conditions. These include obesity, type 2 diabetes, high blood pressure, heart disease, stroke, poor mental health, and early death.

Adults who do not receive a sufficient amount of sleep each night can implement some positive lifestyle and sleep habits to log the needed seven to nine hours. These include the following:

  • Establish a realistic bedtime and stick to it every night, even on the weekends.
  • Maintain comfortable temperature settings and low light levels in your bedroom.
  • Consider a “screen ban” on televisions, computers and tablets, cell phones, and other electronic devices in your bedroom.
  • Abstain from caffeine, alcohol, and large meals in the hours leading up to bedtime.
  • Refrain from using tobacco at any time of day or night.
  • Exercise during the day; this can help you wind down in the evening and prepare for sleep.

Most Haunted: Top 5 Places in Kolkata That Will Scare The Living Daylights Out of You!....part 2

 IF YOU HAVE MISSED THE FIRST PART, CLICK HERE TO VIEW

https://childrenbrightideas.blogspot.com/2021/01/most-haunted-top-10-places-in-kolkata.html

4. Rabindra Sarobar Station


Ever tried boarding the last train at Rabindra Sarobar Station? You probably shouldn’t! According to numerous passengers, they often see shadows and hear weird noises that have no explanation. It is said that all those who committed suicide at the station or jumped off a moving train, still haunt its premises and try and show their presence.

5. South Park Street Cemetery


One of the most touristy spots in Kolkata, the South Park Cemetery will definitely give you chills. Most of the graves here belong to British soldiers. Even though may have felt the presence of certain forces here, the spirits haven’t seemed to harm many. Except for once, when a group of friends noticed the presence of a weird shadow in all the photographs they clicked there and the boy who clicked the photo died of an asthma attack even though he wasn’t asthmatic!


Thank you.....




Monday, 4 January 2021

Most Haunted: Top 5 Places in Kolkata That Will Scare The Living Daylights Out of You!

 

Most Haunted: Top 10 Places in Kolkata That Will Scare The Living Daylights Out of You!


Kolkata, the City of Joy, also does not escape, and the following are the 10 places that are believed to be the most haunted.

1. Writers’ Building



Established around the early ’70s, the building served as an office for the writers of the British East India Company. On December 8, 1930, the trio of Benoy, Badal, and Dinesh headed to the building and assassinated the then inspector general of police, colonel Simpson who was known for treating Indian prisoners brutally.  It is believed that the soul of Colonel Simpson has been haunting this place ever since he was shot by the three young revolutionaries. Visitors often complain about hearing the sounds of footsteps, giggling and random outcries, it is also said that no employee or worker here takes the risk to stay past dusk. The fifth block of the building, where Simpson was shot dead, is today the least visited area in the building.


2. The Hastings House




The Hastings House, located in Alipore, was built by the then Governor-General Warren Hastings for himself and today is a well-known women’s college. The students of the college have often claimed to have seen a man, believed to be Warren Hastings, riding on a horse and seemingly searching for something. It is said that Hastings towards the later years of his life, was extremely depressed and sad. Many believe that his soul never really found peace and is still in search of it. Some also claim to hear the giggles of a young boy and the sound of a football late at midnight, when the college is vacant.

3. The National Library



Built-in 1836, The National Library at Belvedere Estate is known for two things, its rare collection of books and its not so rare incidents of paranormal activities. The guards of the premises often complain about hearing random sounds of a woman, perhaps the wife of Lord Metcalfe who was a stickler for cleanliness, howling, and sometimes giggling as well. If you do not keep the book you’re reading back where you took it from, you can feel her breathing heavily down your neck. It is also said that in 2010, when the building was renovated, around 12 men died brutally on the renovation sight and the souls of those men still haunt the National Library at night.

THANKYOU.....COMING WITH PART-2

What Is a Supernova?

 

What Is a Supernova?




A supernova is the explosion of a star. It is the largest explosion that takes place in space.

Where Do Supernovas Take Place?
Supernovas are often seen in other galaxies. But supernovas are difficult to see in our own Milky Way galaxy because dust blocks our view. In 1604, Johannes Kepler discovered the last observed supernova in the Milky Way. NASA’s Chandra telescope discovered the remains of a more recent supernova. It exploded in the Milky Way more than a hundred years ago.


What Causes a Supernova?
A supernova happens where there is a change in the core, or center, of a star. A change can occur in two different ways, with both resulting in a supernova.

The first type of supernova happens in binary star systems. Binary stars are two stars that orbit the same point. One of the stars, a carbon-oxygen white dwarf, steals matter from its companion star. Eventually, the white dwarf accumulates too much matter. Having too much matter causes the star to explode, resulting in a supernova.

The second type of supernova occurs at the end of a single star’s lifetime. As the star runs out of nuclear fuel, some of its mass flows into its core. Eventually, the core is so heavy that it cannot withstand its own gravitational force. The core collapses, which results in the giant explosion of a supernova. The sun is a single star, but it does not have enough mass to become a supernova.


Why Do Scientists Study Supernovas?
A supernova burns for only a short period of time, but it can tell scientists a lot about the universe.

One kind of supernova has shown scientists that we live in an expanding universe, one that is growing at an ever-increasing rate.

Scientists also have determined that supernovas play a key role in distributing elements throughout the universe. When the star explodes, it shoots elements and debris into space. Many of the elements we find here on Earth are made in the core of stars. These elements travel on to form new stars, planets, and everything else in the universe.


How Do NASA Scientists Look for Supernovas?
NASA scientists use different types of telescopes to look for and study supernovas. Some telescopes are used to observe the visible light from the explosion. Others record data from the X-rays and gamma rays that are also produced. Both NASA’s Hubble Space Telescope and Chandra X-ray Observatory have captured images of supernovas.

In June 2012, NASA launched the first orbiting telescope that focuses light in the high-energy region of the electromagnetic spectrum. The NuSTAR mission has several jobs to do. It will look for collapsed stars and black holes. It also will search for the remains of supernovas. Scientists hope to learn more about how stars explode and the elements that are created by supernovas.


What Can You Do to Help?
You do not have to be a scientist or even have a telescope, to hunt for supernovas. For example, in 2008 a teenager discovered a supernova. Then in January 2011, a 10-year-old girl from Canada discovered a supernova while looking at night sky images on her computer. The images, taken by an amateur astronomer, just happened to include a supernova.

What Is a Black Hole?

 

What Is a Black Hole?





A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because the matter has been squeezed into a tiny space. This can happen when a star is dying.

Because no light can get out, people can't see black holes. They are invisible. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently than other stars.


How Big Are Black Holes?

Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mountain. Mass is the amount of matter, or "stuff," in an object.

Another kind of black hole is called "stellar." Its mass can be up to 20 times more than the mass of the sun. There may be many, many stellar-mass black holes in Earth's galaxy. Earth's galaxy is called the Milky Way.

The largest black holes are called "supermassive." These black holes have masses that are more than 1 million suns together. Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy is called Sagittarius A. It has a mass equal to about 4 million suns and would fit inside a very large ball that could hold a few million Earths.


How Do Black Holes Form?

Scientists think the smallest black holes formed when the universe began.

Stellar black holes are made when the center of a very big star falls in upon itself or collapses. When this happens, it causes a supernova. A supernova is an exploding star that blasts part of the star into space.

Scientists think supermassive black holes were made at the same time as the galaxy they are in.


If Black Holes Are "Black," How Do Scientists Know They Are There?
A black hole can not be seen because strong gravity pulls all of the light into the middle of the black hole. But scientists can see how strong gravity affects the stars and gas around the black hole. Scientists can study stars to find out if they are flying around, or orbiting, a black hole.

When a black hole and a star are close together, high-energy light is made. This kind of light can not be seen with human eyes. Scientists use satellites and telescopes in space to see the high-energy light.


Could a Black Hole Destroy Earth?
Black holes do not go around in space eating stars, moons, and planets. Earth will not fall into a black hole because no black hole is close enough to the solar system for Earth to do that.

Even if a black hole the same mass as the sun were to take the place of the sun, Earth still would not fall in. The black hole would have the same gravity as the sun. Earth and the other planets would orbit the black hole as they orbit the sun now.

The sun will never turn into a black hole. The sun is not a big enough star to make a black hole.


THANKYOU

DON'T FORGET TO SHARE AND COMMENT DOWN BELOW!


AHONA SARKAR


What Was the Apollo Program?

 

What Was the Apollo Program?


Apollo was a NASA program that sent people to the moon. There were 11 Apollo flights. The first Apollo flight was in 1968.

The first four flights tested the spacecraft. Six of the other seven flights landed on the moon. The first moon landing took place in 1969. The last moon landing was in 1972.

Twelve astronauts walked on the moon. They studied the lunar surface. They collected moon rocks and brought them back to Earth.


What Spacecraft Were Used for the Apollo Program?
NASA built the Apollo Command Module for this program. It had room for three astronauts. The crew area had about as much room as a car. They rode in it on the way to the moon and back.

Another spacecraft, the Lunar Module, was used for landing on the moon. This spacecraft carried two astronauts. It took them from orbit around the moon to the moon's surface. The Lunar Module also carried them back into the moon's orbit to the Command Module.

An astronaut sits in a lunar rover on the moon
On the last three Apollo missions, astronauts drove a lunar rover on the moon.
Credits: NASA

Two types of rockets were used for Apollo, the Saturn IB, and the Saturn V (5).

The first Apollo flight used the smaller Saturn IB rocket. This rocket had two stages. That means it was made of two parts. When the first part ran out of fuel, it dropped away from the other. It burned up in Earth's atmosphere. The second part kept flying. The Saturn IB rocket was used to test the Apollo capsule in Earth orbit. It was about the size of a 22-story building.

The other 10 flights used the more powerful Saturn V rocket. This three-stage rocket could send the Apollo spacecraft to the moon. The Saturn V was as tall as a 36-story building.

The following missions flew humans during Apollo:


Apollo Flight 7
Date: Oct. 11-22, 1968
Mission: Tested the Command Module
Crew: Schirra, Eisele, Cunningham

Apollo Flight 8
Date: Dec. 21-27, 1968
Mission: First to orbit the moon
Crew: Borman, Lovell, Anders

Apollo Flight 9
Date: March 3-13, 1969
Mission: Tested the Lunar Module
Crew: McDivitt, Scott, Schweickart

Apollo Flight 10
Date: May 18-26, 1969
Mission: Tested the Lunar Module around the moon
Crew: Cernan, Young, Stafford

Apollo Flight 11
Date: July 16-24, 1969
Mission: First to land on the moon
Crew: Armstrong, Aldrin, Collins

Apollo Flight 12
Date: Nov. 14-24, 1969
Mission: Landed on the moon
Crew: Conrad, Bean, Gordon

Apollo Flight 13
Date: April 11-17, 1970
Mission: Was supposed to land on the moon but had a malfunction
Crew: Lovell, Swigert, Haise

Apollo Flight 14
Date: Jan. 31-Feb. 9, 1971
Mission: Landed on the moon
Crew: Shepard, Mitchell, Roosa

Apollo Flight 15
Date: July 26-Aug. 7, 1971
Mission: Landed on the moon
Crew: Scott, Irwin, Worden
Apollo Flight 16

Date: April 16-27, 1972
Mission: Landed on the moon
Crew: Young, Duke, Matting 
Apollo Flight 17

Date: Dec. 7-19, 1972
Mission: Landed on the moon
Crew: Cernan, Schmitt, Evans


When Did Humans First Visit the Moon?
Apollo 8 was the first manned mission to go to the moon. This mission did not land on the moon. It orbited the moon, then came back to Earth. Apollo 8 circled around the moon on Christmas Eve 1968. The crew was Frank Borman, Bill Anders, and Jim Lovell.

The first moon landing was Apollo 11. It landed on July 20, 1969. The crew of Apollo 11 was Neil Armstrong, Michael Collins, and Buzz Aldrin. Armstrong and Aldrin walked on the moon. Collins stayed in orbit around the moon. Neil Armstrong was the first person to walk on the moon. He said, "That's one small step for (a) man; one giant leap for mankind."

Apollo 13 is one of the more famous missions to the moon. A movie was made about this flight. Apollo 13 was going to land on the moon. On the way there, the spacecraft had a problem. NASA had to figure out how to bring the astronauts home safely. They flew all the way around the moon before returning home. The crew was able to land safely on Earth.


How Did Astronauts Land on the Moon?
The Apollo spacecraft that went to the moon was launched on top of a three-stage Saturn V rocket. The first two stages used all their fuel to get to orbit. The third stage pushed the spacecraft to the moon.

Once the spacecraft reached the moon, the Lunar Module and the Command Module split from each other. The two astronauts in the Lunar Module landed on the moon. The third astronaut stayed in the Command Module in orbit around the moon. On the last three missions, the Lunar Module carried a car called the lunar rover. Astronauts drove the lunar rover around on the moon to explore farther. The lunar rovers were made so they could be folded to fit in a box on the Lunar Module. The lunar rovers were left on the moon.

When the two astronauts finished their work on the moon, they got back in the Lunar Module and launched. It went back into orbit around the moon. It connected with the Command Module. The two astronauts from the Lunar Module got back into the Command Module with the other astronaut. They left the Lunar Module behind. It crashed into the moon. Then they flew back to Earth. The Command Module landed in the ocean. A ship picked up the astronauts. Why Was the Apollo Program Important?

In 1961, President John F. Kennedy said he wanted America to land astronauts on the moon. He wanted it to happen during the 1960s. NASA did this with the Apollo program. It was the first time people had left Earth orbit and visited another world. These trips will help NASA explore other worlds later.


The Secret of How the Titanic Sank

  The Secret of How the Titanic Sank New evidence has experts rethinking how the luxury passenger liner sank. FOR DECADES AFTER THE  disaste...