x-rays

A Star Came too Close to a Black Hole. It Didn’t End Well

Black holes are confounding objects that stretch physics to its limits. The most massive ones lurk in the centers of…

1 month ago

A Black Hole has been Burping for 100 Million Years

Black holes are gluttonous behemoths that lurk in the center of galaxies. Almost everybody knows that nothing can escape them,…

2 months ago

A Black Hole’s X-Rays are Coming From a Region 2,000 km Away From the Singularity Itself

A study of Cygnus X-1 shows its jets emanate from a region a bit off from the black hole itself.

3 months ago

How Dangerous are Nearby Supernovae to Life on Earth?

Life and supernovae don't mix. From a distance, supernovae explosions are fascinating. A star more massive than our Sun runs…

3 months ago

A Pulsar is Blasting out Jets of Matter and Antimatter

Why is there so much antimatter in the Universe? Ordinary matter is far more plentiful than antimatter, but scientists keep…

11 months ago

The Expanding Debris Cloud From the Kilonova Tells the Story of What Happens When Neutron Stars Collide

When two neutron stars collide, it creates a kilonova. The event causes both gravitational waves and emissions of electromagnetic energy.…

11 months ago

Astronomers Find a Black Hole That was Somehow Pushed Over Onto its Side

The planets in our Solar System all rotate on axes that roughly match the Sun's rotational axis. This agreement between…

11 months ago

Astronomers Discover an Intermediate-Mass Black Hole as it Destroys a Star

Supermassive black holes (SMBH) reside in the center of galaxies like the Milky Way. They are mind-bogglingly massive, ranging from…

1 year ago

Astronomers Find a Supermassive Black Hole That’s Feasting on a Regular Schedule, Every 9 Hours

Astronomers have found a supermassive black hole (SMBH) with an unusually regular feeding schedule. The behemoth is an active galactic…

3 years ago

X-rays Might be a Better Way to Communicate in Space

In the coming years, NASA plans to test x-ray technology aboard the ISS as a way of creating more robust…

4 years ago