Andy Briggs has been a science and technology communicator for more than 30 years, mainly in the fields of information technology, astronomy and astrophysics. He has been involved with many astronomy societies in the UK and is a frequent contributor to Astronomy Ireland magazine. He also lectures regularly on astrophysics-related themes such as gravitational waves and black holes. Andy lives in Catalonia, Spain, with his wife and daughter.
Dark matter doesn’t emit light. It can’t be directly observed with any of the existing tools of astronomers. Yet astrophysicists believe that it and dark energy make up most of the mass of the cosmos. What dark matter is, and what it isn’t. here.
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.
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?
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.