Andy Briggs
A black hole surrounded by magnetic fields and an accretion disk.

What is astrophysics?

Observational astronomy and astrophysics work together to further our understanding of the cosmos. Astrophysicists apply the laws of physics and physical theories to interpret the light gathered by observational astronomers.

Yellow-orange donut shape against a black background.

What are black holes?

Black holes are among the most bizarre and enigmatic objects in the modern universe. Click in for a black hole introduction.

A bright red star on the left. A slightly dimmer red star on the right.

Betelgeuse: What’s up?

The red supergiant star Betelgeuse, a bright star in the constellation of Orion, has been making headlines due to a recent drop in brightness. Is an explosion imminent? If it happens, will Earth be affected?

What is the asteroid belt?

The asteroid belt is a region of our solar system – between the orbits of Mars and Jupiter – in which many small bodies orbit our sun. Here’s a good basic introduction.

The location of the neutron star at the core of the supernova 1987A remnant. Via Cardiff University.

Astronomers find ‘missing’ neutron star after 32 years

Thirty-two years ago, Supernova 1987A erupted in the nearby Large Magellanic Cloud. Astronomers using the ALMA radio telescope now say they’ve found the small, compact neutron star created in this mighty star explosion.