Spaceflight
Spaceflight covers topics related to human presence in outer space. Learn about weightlessness, astronauts and space tourism in this section.
The Zoo Hypothesis: Are Aliens Watching Us Like Animals in a Zoo?
Communicating With Aliens Is Hard. Communicating With Alien AI Could Be Harder
UFOs and the Government
The Largest Star in the Universe Is 1,700x Bigger Than Our Sun
What Is a Harvest Moon?
The Mysteries of Mercury Retrograde Unveiled: A Cosmic Phenomenon
10 Best Ideas for Interplanetary Communication
How can the moon generate electricity?
How Terraforming Mars Will Work
Quiz: Apollo 11, the First Moon Landing
Who was James Webb?
10 Space Landmarks We'd Like to Visit
The Fastest Fictional Spaceships
10 Fictional Spacecraft We Wish Were Real
How Lunar Rovers Work
Learn More / Page 3
I would like to know how an astronaut, who is in a space suit for hours, can eat, drink and eliminate fluid- and solid-waste byproducts? What "mechanics" are built into the suit and how do they operate?
Today, Blue Origin flew its billionaire founder Jeff Bezos and three others into space, a week after Virgin Galactic flew its billionaire founder Richard Branson on the same mission. Will space tourism be more than a millionaire's hobby?
GPS is great, but it's kind of Earth-centric. If we have our hearts set on traveling to distant planets and faraway stars, then it's time to come up with a new navigation system. NASA, of course, has an idea.