Observations with ESO’s Very Large Telescope in Chile have discovered a new class of “dark” globular star clusters around the giant galaxy Centaurus A. These mysterious objects look similar to normal clusters, but contain much more mass and may either harbour unexpected amounts of dark matter, or contain massive black holes — neither of which was expected nor is understood.
Astronomers using the 10-metre Keck II and Pan-STARRS1 telescopes on Hawaii have discovered a Milky Way star travelling at a record 2.7 million miles per hour. Propelled by the thermonuclear detonation of a massive white dwarf companion, this hypervelocity star will escape the gravity of our Galaxy.
The MUSE instrument on ESO’s Very Large Telescope has given astronomers the best ever three-dimensional view of the deep universe. The new observations of the Hubble Deep Field South reveal the distances, motions and other properties of far more galaxies than ever before in this tiny piece of the sky.