Two studies fill in gaps about the cosmos’s ordinary matter. One maps it all, even the “missing matter.” The other details one of its hiding spots.

Astronomers peering into the Large Magellanic Cloud have caught a white-dwarf crime scene in the act of giving up its secrets ...

Astronomers studying the remnant SNR 0509-67.5 have finally caught a white dwarf in the act of a rare “double-detonation” supernova, where an initial helium blast on the star’s surface triggers a ...

The James Webb telescope has made another stunning discovery -- this time of a massive planet that could potentially sustain ...

The explosion of a star, called a supernova, is an immensely violent event. It usually involves a star more than eight times ...

NASA's James Webb Space Telescope has been unwaveringly focused on our universe. With its unprecedented power to detect and ...

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.

Scientists have proposed two experimental spacecraft that could reach one of the farthest known objects in the solar system ...

(CN) — While all stars go out in a bang, some go out with two. For the first time, astronomers have recorded visual evidence ...

James Webb’s mid-infrared vision has likely captured a frigid, Saturn-mass planet shaping the dusty rings around the nearby ...

A cataclysmic variable star was found as part of a project using two telescopes from opposite sides of the world.

Astronomers have finally caught a dying star in space going out with a bang — and then another bang. The new photographic ...