This sequence of images taken by NASA’s Hubble Space Telescope shows Comet 252P/LINEAR as it passed by Earth. The visit was one of the closest encounters between a comet and our planet.
The star at the center of the Red Rectangle is similar to Earth’s sun and is responsible for those evenly spaced lines as it releases gas and other material to create the nebula and its distinctive shape.
Makemake, the second brightest dwarf planet in the Kuiper belt, has a moon that will help NASA tell more about it.
The Bubble Nebula is seven light-years across—about one-and-a-half times the distance from our sun to its nearest stellar neighbor, Alpha Centauri, and resides 7,100 light-years from Earth in the constellation Cassiopeia.
Discoveries about the galaxy Leo A and its unusual timescale.
