Posts by 

Andy Briggs

A mystery solved? Fast Radio Burst detected within Milky Way

Fast Radio Bursts are very mysterious bursts of radio waves - perhaps just a thousandth of a second long - coming from all over the sky. This new discovery of one in our own galaxy is a stunner!

What are gravitational waves?

First postulated by Albert Einstein in 1916 but not observed directly until September 2015, gravitational waves are ripples in spacetime.

What are exoplanets?

Exoplanets are worlds orbiting distant stars. The history of our knowledge of exoplanets, the various types of exoplanets, how astronomers find them, and more, here.

What is dark energy?

Dark energy is one of the great unsolved mysteries of cosmology. It's now thought to make up 68% of everything in the universe.

What is dark matter?

What is dark matter? It doesn't emit light. It hasn't been directly observed. Yet it appears to exist and to exert a major influence on galaxies.

What is a neutron star?

Neutron stars are born in supernova explosions. They are stars with a couple of times our sun's mass, squeezed into a sphere the size of an earthly city.

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.

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.

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?

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.