Mercury is the smallest planet but has the largest core compared to its size. Is the solar wind to blame?
Can ephemeral, salty puddles on the surface of Mars sustain life?
How could we measure winds on a distant brown dwarf or a Jupiter-like planet?
Can an asteroid passing through the atmosphere explain the largest impact event in recorded history?
What happens when you take an Earth-like planet and tilt it nearly on its side? For life, its not as crazy as it sounds.
Ammonium salts have been discovered on Comet 67P! This discovery helps solve a big mystery about the nitrogen content on the comet, which was previously measured to be lower than expected.