NASA just bought the rights to four batches of future moon samples for the low, low price of $25,001.
The Martian underground may have been habitable billions of years ago even if the planet's surface was a dry, frigid wasteland.
Holding a pristine piece of Mars in a lab on Earth is among the most ambitious dreams of planetary scientists, and NASA and its European counterpart want to make the dream a reality.
A photo captured by amateur astronomer Alexander Krivenyshev shows two big sunspots on Earth's star.
See what's up in the night sky for December 2020, including stargazing events and the moon's phases, in this Space.com gallery courtesy of Starry Night Software.