Dark matter remains one of science's deepest mysteries. It makes up about 25% of our universe, yet scientists only observe ...

"Dark matter could be captured by stars and accumulate inside them. If that happens, it might also interact with itself and ...

The weird outbursts of a distant supermassive black hole may be caused by a death-defying white dwarf walking a cosmic tight ...

Even when a star finally dies, however, their remnants will continue to shine. In fact, except for black holes, every remnant ever created still shines today.

How far away it is: 93 million miles (150 million km) ...

It's a dead star called a " white dwarf." "This would be the closest thing we know of around any black hole," Megan Masterson, a physicist at MIT who co-led the research, said in a statement.

Most stars are main sequence stars that fuse hydrogen to form helium in their cores - including our sun.

Though small, white dwarfs are vicious: They pack much of a solar-type star’s mass into an approximately Earth-sized sphere.

Star classification often depends on the mass of these suns—the biggest burn hottest and brightest, while other types of stars are cooler and longer-lived.

An intermediate-mass black hole lurking undetected in a dwarf galaxy revealed itself to astronomers when it gobbled up an unlucky star that strayed too close. The shredding of the star, known as a ...

The weird outbursts of a distant supermassive black hole may be caused by a death-defying white dwarf walking a cosmic tight rope around it.