It’s a first-ever detection of water vapor in a super-Earth’s atmosphere, orbiting in the habitable zone of its star, 110 light-years away. The discovery supports the possibility that our galaxy contains many such habitable worlds.

The lakes on Saturn’s moon Titan are filled with liquid methane, not water, and some are surrounded by steep rims. A new study suggests these features might have been caused by explosions of warming nitrogen, which created Titan’s lake basins long ago.

Chinese media have reported that the Yutu-2 rover has discovered a “gel-like” substance in a crater on the far side of the moon. It sounds intriguing, but details are still scarce.

The electromagnetic spectrum describes all the wavelengths of light, both seen and unseen.

Astronomers have found evidence for a possible exomoon orbiting a gas giant planet 550 light-years away. If they’re interpreting the evidence correctly, this moon would be a place of destruction, even more volcanically active than Jupiter’s famous volcanic moon, Io.