Read article 'Elephants in the gamma-ray sky'
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 'Elephants in the gamma-ray sky'
Read article 'Relativity passes test on a galactic scale'
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 'Black holes galore at galactic core'
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'
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'
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'
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'
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'
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.
Read article 'Ancient black hole lights up early universe'
Ancient black hole lights up early universe
The spectrum of J1342+0928 gives us a view on the universe when it was just 690 million years old.
Read article 'HAWC clarifies cosmic positron excess'
HAWC clarifies cosmic positron excess
New measurements by the High-Altitude Water Cherenkov (HAWC) experiment hints at a more exotic origin of the positron excess.
