This artist's illustration shows an intermediate-mass black hole tearing into a star.
This is an artist's impression of a large star known as HD74423 and its much smaller red dwarf companion in a binary star system. The large star appears to pulsate on one side only, and it's being distorted by the gravitational pull of its companion star into a teardrop shape.
This is an artist's impression of two white dwarfs in the process of merging. While astronomers expected that this might cause a supernova, they have found an instance of two white dwarf stars that survived merging.
A combination of space and ground-based telescopes have found evidence for the biggest explosion seen in the universe. The explosion was created by a black hole located in the Ophiuchus cluster's central galaxy, which has blasted out jets and carved a large cavity in the surrounding hot gas.
The red supergiant star Betelgeuse, in the constellation of Orion, has been undergoing unprecedented dimming. This image was taken in January using the European Southern Observatory's Very Large Telescope.
This new ALMA image shows the outcome of a stellar fight: a complex and stunning gas environment surrounding the binary star system HD101584.
NASA's Spitzer Space Telescope captured the Tarantula Nebula in two wavelengths of infrared light. The red represents hot gas, while the blue regions are interstellar dust.
A white dwarf, left, is pulling material off of a brown dwarf, right, about 3,000 light-years from Earth.
This image shows the orbits of the six G objects at the center of our galaxy, with the supermassive black hole indicated with a white cross. Stars, gas and dust are in the background.
After stars die, they expel their particles out into space, which form new stars in turn. In one case, stardust became embedded in a meteorite that fell to Earth. This illustration shows that stardust could flow from sources like the Egg Nebula to create the grains recovered from the meteorite, which landed in Australia.
The former North Star, Alpha Draconis or Thuban, is circled here in an image of the northern sky.
Galaxy UGC 2885, nicknamed the "Godzilla galaxy," may be the largest one in the local universe.
The host galaxy of a newly traced repeating fast radio burst acquired with the 8-meter Gemini-North telescope.
The Milky Way's central region was imaged using the European Southern Observatory's Very Large Telescope.
This is an artist's illustration of what MAMBO-9 would look like in visible light. The galaxy is very dusty and it has yet to build most of its stars. The two components show that the galaxy is in the process of merging.
Astronomers have found a white dwarf star surrounded by a gas disk created from an ice giant planet being torn apart by its gravity.