Case of the missing Nitrogen on Comet 67P
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.
Table Salt detected on Europa!
Using a spectrometer on the Hubble Space Telescope, astronomers have detected sodium chloride, a.k.a., table salt, on the surface of Europa!