A FLASH combination: ASKAP and MUSE sniff out gas around galaxies

The timescales in which star-forming galaxies deplete their gas is found to be short relative to the age of the Universe. This points to the conclusion that galaxies must have a way to replenish their gas reservoirs and indeed, early cosmological simulations reveal cold gas being channeled along dark matter filaments. At the same time, …

Bad space weather may make life impossible near Proxima Centauri

If you look up in the southern sky you can see the “pointer” stars, pointing towards the Southern Cross. One of these pointers is Alpha Centauri, which is actually a pair of Sun-like stars that are too close together to tell apart by eye. There is a third member of the Alpha Centauri system as …

We’ve mapped a million previously undiscovered galaxies beyond the Milky Way. Take the virtual tour here.

Astronomers have mapped about a million previously undiscovered galaxies beyond the Milky Way, in the most detailed survey of the southern sky ever carried out using radio waves. The Rapid ASKAP Continuum Survey (or RACS) has placed the CSIRO’s Australian SKA Pathfinder radio telescope (ASKAP) firmly on the international astronomy map. While past surveys have …

Tiny star behaves like both a sun and a planet

A well-known star is behaving somewhat like a planet, a SIfA-led team has found. PhD candidate Andrew Zic and his collaborators have discovered pulsed radio emission from UV Ceti, a dwarf star with a mass just a tenth of the Sun’s. The emission has a characteristic that until recently has only been seen in radio …