NASA's New Horizons spacecraft has captured an "X" inscription on Pluto's icy surface.
Astronomers found that the majority of stars have strong magnetic fields, it turns out this process may not be so rare after all.
The Hubble Space Telescope captured the image of two galaxies as they smashed into each other, forming a giant elliptical galaxy, NGC 3597.
Astronomers have captured the image of a supermassive and super-hungry spiral galaxy that is located 65 million light-years away.
Astronomers used data from NASA's Great Observatories, which enabled them to carry out a detailed study of a large young galaxy cluster and they even weighed the mass of the galaxy.
A team of Australian and American researchers have discovered a distant, ancient cloud of gas, which likely contains the elements from the very first stars that formed in the universe.
The Hubble Space Telescope has spotted an ancient globular cluster 22,000 light-years away in the constellation of Serpens (The Serpent).
The NASA Cassini Spacecraft has captured three Saturnian moons in just one image.
An astrophysicist has discovered a galaxy with two black holes in which one of them is starved of stars, which is rare since black holes usually contain numerous stars.
The Wide Field Planetary Camera 2 on the Hubble Space Telescope has captured the image of two merging galaxies, which are in the process of becoming one galaxy.
Space and astronomy had some of the most interesting discoveries in 2015. Here are some of interesting astronomical discoveries and observations during 2015.