Space Exploration
Space exploration is a broad topic covering many facets of deep-space and planetary science. Learn about space probes, Mars Rovers, SETI and other out-of-this-world subjects.
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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 hunt for exoplanets, planets orbiting sun-like stars, is on! Thanks to new equipment, NASA has spotted thousands of them. But which ones might be able to handle life?
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After the Soviet Union launched Sputnik I in 1957, the space race was on. And what followed was decades of secrecy that dominated its space program.
And it's just a galactic hop, skip and a jump away.
It's not just NASA pros staring into the night sky. Lots of skilled amateurs are out there pointing their telescopes into the great beyond. But can the average space enthusiast actually make a critical discovery?
Surprisingly, the solar system isn't odorless - it has a distinct scent that some astronauts like and others think is stinky. So, what does it smell like and why?