Earth had an asteroid mini-moon late last year for 2 months. Now scientists say that the mini-moon was likely a chunk of our moon ejected in an impact.
At least some ancient lakes on Mars were ice-free. NASA's Curiosity rover discovered evidence for small wind-blown ripples on the former lakes in Gale crater.
The spacecraft bus for the Pandora exoplanet telescope has been complete. Pandora will analyze atmospheres of at least 20 exoplanets after its 2025 launch.
Comet ATLAS G3 is near the sun just after sunset until about January 20 for those in the Northern Hemisphere. Here are some of the first pics of the comet!