Space exploration and travel
Six decades ago, the Soviets launched a cosmonaut into orbit, shaking up the Cold War in ways that still reverberate.
Greek mythology says Icarus fell because he flew too close to the sun. What does science say?
There's a research station in Hawaii being used as a long-duration Mars and moon exploration project.
This month brought unusual weather to many spots around the world.
Scientists are working on projects to see if humans can make the trip to Mars and live there.
The space shuttle Columbia disintegrated as it reentered the atmosphere Feb. 1, 2003.
Scientists want to mine the moon for ice to use in rocket fuel for a future refueling station.
The lunar surface offers advantages for infrared and radio astronomy, despite the challenges.
To researchers' surprise, Comet 67P/Churyumov–Gerasimenko has ice that's fluffier than freshly fallen snow.