Spaceflight covers topics related to human presence in outer space. Learn about weightlessness, astronauts and space tourism in this section.
Scientists Want You to Say 'UAPs', Not 'UFOs'
The Zoo Hypothesis: Are Aliens Watching Us Like Animals in a Zoo?
Are Pentagon-confirmed UFOs a National Security Threat?
Could 'Early' Dark Energy Explain the Mystery of the Universe's Expansion?
What If We Had No Moon?
June's Full Moon Is the Strawberry Moon
Scientists Make History by Growing Plants in Soil From Moon
Without Regulation, the Night Sky Will Be Twinkling With Satellites, Not Stars
Space Architects Will Help Us Live and Work Among the Stars
Moon's Glass Beads Hold Billions of Tons of Water
What Does a Science Communicator Do?
What Is the Coldest Place in the Universe?
How the International Space Station Works
NASA's Dragonfly Rotorcraft to Explore Saturn's Giant Moon Titan
Can a Helicopter Fly on Mars? NASA Says Yes
Learn More / Page 4
How long can a human survive in outer space? In science fiction movies, this seems to be an area of much creative license, with some people exploding instantly, and others surviving for nearly a minute without long-term ill effect. I read once that one's blood would boil, but I read elsewhere that this isn't true. So what is it?
Like a firefighter or a rock star, an astronaut is one of those jobs kids say they want to have when they grow up. If you're still serious, we can tell you what it takes.
We are seeing a lot more space suits now that the international space station is occupied. Learn how space suits work and why they cost $12 million each!
On September 18, 2006, Anousheh Ansari, a telecommunications entrepreneur, became the first female space tourist and the fourth space tourist overall. Could you be next? Find out what's in the works to get you to space.
By Kevin Bonsor