Space
Explore the vast reaches of space and mankind’s continuing efforts to conquer the stars, including theories such as the Big Bang, the International Space Station, plus what the future holds for space travel and exploration.
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
What Is a White Hole? Does the Cosmic Phenomenon Exist?
10 Best Ideas for Interplanetary Communication
How can the moon generate electricity?
What Really Happened to Yuri Gagarin, the First Man in Space?
Apollo 11 One Giant Leap For Mankind
What is it like to sleep in space?
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 15
What if your job were to protect life in the galaxy at all costs? That's exactly what the folks manning NASA's Planetary Protection office do, and bunny suits are just the beginning.
One tragic, moonless night in April 1912, the Titanic slid into the depths of the North Atlantic Ocean -- for good. A crew of Texas State academics suggested that Earth's favorite satellite may have some explaining to do.
Imagine if we could get to Mars in 40 days instead of seven months! It could happen if we used plasma rockets, which travel at 34 miles per second. But how do we make this a reality?
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It's a bird, it's a plane, it's a supermoon! Aside from being bigger and brighter than a regular moon, does a supermoon affect anything on Earth?
The European Space Agency's Gaia satellite observatory has created a 3-D model of the Milky Way — and beyond! — that charts more than a billion stars.
European scientists are inviting gamers to become citizen scientists, sifting through real astronomical data to spot undiscovered planets orbiting other stars.
Say hello to the newly discovered TRAPPIST-1 system, which is just 39 light-years away and filled with seven Earth-like planets.
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The rings of Saturn, Uranus and Neptune may be remnants of smaller planets destroyed long ago by the gas giants' powerful gravity.
And solving that issue could go a long way toward making our planetary neighbor habitable.
NASA's Spot the Station feature will text or email you when the ISS is about to be overhead. And you won't even need a telescope to see it!
The sun's atmosphere is actually hotter than its surface, even though you'd assume the surface is what generates all that heat. How does that work?
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Saturn's largest moon Titan is the only other celestial body we know of that has liquid lakes on its surface. NASA has just captured some amazing footage of clouds.
Outer planets in our solar system have atmospheres made up of flammable chemicals that can cause explosions on Earth. Could a rocketship, or electric spark, ignite them?
Elton's always maintained that Mars ain't the kind of place to raise your kids. Is he right?
By Julia Layton
The space telescope's ultraviolet observations come days before the Juno space probe will arrive to orbit the gas giant's polar regions.
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The August 2023 full moon is known as the sturgeon moon. This year, it's also a supermoon and will be followed by a blue moon at the end of the month!