Read article 'Solving the mystery of a historic stellar blast'
Some 180 years ago, a relatively normal star called Eta Carinae suddenly brightened to become the second brightest star in the sky, before almost disappearing at the end of the 19th century.
Read article 'Elephants in the gamma-ray sky'
The discovery of large-scale features in the gamma-ray sky in approximately the same direction continues to puzzle researchers.
Read article 'Relativity passes test on a galactic scale'
Gravity behaves the same way on a galactic scale as it does in our solar system, and alternative gravity models which remove the need for dark energy are disfavoured.
Read article 'Gravitational Waves Vol 1: Theory and Experiments'
Carlo Bradaschia reviews in 2009 Gravitational Waves Vol 1: Theory and Experiments.
Read article 'Black holes galore at galactic core'
NASA’s Chandra X-ray Observatory have revealed a dozen stellar-mass black holes at the centre of the galaxy, providing the first observational evidence for such a black-hole cluster.
Read article 'HESS proves the power of TeV astronomy'
To celebrate its 15th anniversary, the HESS collaboration has published its largest set of scientific results to date.
Read article 'Hubble expansion discrepancy deepens'
Adam Riess from the Space Telescope Science Institute and colleagues have now made a more precise, direct measurement that reinforces the mismatch and could signal new physics.
Read article 'Spotting the first extragalactic planets'
Radiation emitted around a distant black hole has revealed the existence of extragalactic planets in a galaxy 3.8 billion light years away.
Read article 'Europe defines astroparticle strategy'
Multi-messenger astronomy, neutrino physics and dark matter are among several topics set to take priority in Europe, according to a report by the Astroparticle Physics European Consortium (APPEC).
Read article 'ESO'
A new national facility at La Silla Observatory in Chile, operated by the European Southern Observatory (ESO), made its first observations at the beginning of the year.
