For the first time, astronomers have observed a pair of galaxies where one is piercing the other with intense radiation from a quasar powered by a black hole.
Astronomers have seen convective clouds in the northern regions of Saturn's moon Titan for the 1st time. The methane rains replenish Titan's lakes and seas.
Astronomers have listened to a nearby star's music - subtle interior vibrations - to learn more about how stars' rotation speed slows down as they age.