How dark matter could have built massive black holes after the big bang
Astronomers have long been puzzled by the discovery of extremely large black holes in the early universe.
Some of these black holes, found less than...
How a black hole and a shredded star could light up a galaxy
In 2014, a strange cloudy object called G2 made a close approach to Sagittarius A*, (Sag A*) the supermassive black hole at the heart...
Two monsters, one galaxy, and a collision 100 years away!
Space is full of objects that push the boundaries of imagination, but few do it quite as effectively as a black hole.
At its simplest,...
Scientists reveal where water is hiding on the moon after billions of years
Scientists have long suspected that water exists on the moon, but exactly how it got there—and where it is most concentrated—has remained a mystery.
Now,...
Moon dust tells a hidden story: How space delivered and transformed life’s building blocks
A new study based on samples from China’s Chang'e-5 and Chang'e-6 missions is helping scientists understand how the basic ingredients of life arrived and...
It’s not supposed to be like this: A giant planet orbits a small star
The nebular hypothesis states that stars and the planets that orbit them form from the same reservoir of material, called a solar nebula.
It's the...
Astronomers finally spot vast hydrogen clouds that fueled early galaxies
For decades, scientists believed the early universe was filled with enormous amounts of hydrogen gas—the basic ingredient needed to form stars.
But proving this idea...
Astronomers discover two supermassive black holes on the verge of collision
Supermassive black holes sit at the centers of most large galaxies, and they are some of the most powerful objects in the universe.
Scientists believe...
Why Jupiter has more giant moons than Saturn
Jupiter and Saturn are the two largest planets in our solar system, and both are surrounded by dozens—even hundreds—of moons.
But their moon systems look...
A new kind of star remnant? Scientists find two mysterious cosmic twins
Astronomers have discovered two unusual stellar objects that may belong to a completely new class of star remnants.
These objects, nicknamed “Gandalf” and “Moon-Sized,” share...