In a cosmic game of pinball, black holes fling high-energy protons into space, where they zigzag around at near light-speeds before smashing into low-energy protons, finds a new study.
Stars are giant, luminous spheres of plasma. Galaxies consist of stars, stellar remnants, dust, gas, and dark matter, bound together by gravity. Learn more about stars and galaxies.
Astronomers are watching a galaxy rip to shreds, a finding that could shed some light on how galaxies can go from riches to rags.
In an interview with SPACE.com, Astrophysicist, Neil deGrasse Tyson, discusses the mysteries surrounding black holes and the reason he chose to name his new book after them.
A star found spinning more than a thousand times every second is thought to be the fastest rotating dead star known.
Two stellar titans are waging wind wars outside the Milky Way, and astronomers have the pictures to prove it.
A spacecraft in solar orbit reached almost directly above the south pole of the Sun last week, giving scientists a rare glimpse of this unfamiliar territory.
A swarm of colliding comets is weaving a dusty death shroud for a distant stellar corpse and providing astronomers with rare proof that certain solar system objects can outlive their suns.
A new cosmic map reveals a close relationship between galaxies that have energetic supermassive black holes at their centers and the distribution of invisible dark matter in the early universe.
Streams of glittering stellar gems on the outer edges of Andromeda are remnants of an ancient galactic collision that helped shape the spiral galaxy.
The poet Walt Whitman said, “I do not want the constellations any nearer, I know they are very well where they are.” But where are they, exactly?
SEATTLE - The most distant star cluster astronomers have ever observed has been found behind one of the nearest clusters to Earth.
White dwarf stars locked in binary systems can spawn solar flares, spots and other activity in their otherwise calm stellar neighbors, astronomers said this week.
The discovery of several large, metal-poor stars located far from the center of the Andromeda galaxy suggests our nearest galactic neighbor might be up to five times larger than previously thought.
A recently discovered white dwarf system could be a sign of what will happen in our own solar system in a few billion years.