It’s been the defining question of high-energy astrophysics for the past century: where do cosmic rays come from? New findings from the IceCube Neutrino Observatory at the South Pole have brought us closer…
A radical discovery by my colleagues and I – reported this week in Physical Review Letters – could help explain why it was possible for life (at least as we know it) to develop on Earth, but not in other…
Australian astronomers have shed new light on the cosmic filament that binds the Milky Way together, providing new clues on how the galaxy is formed and how it grows. The Milky Way, home to our solar system…
Some astronomical questions can only be answered by looking at the whole sky all at once but the technology to do that doesn’t exist yet. Enter the new ARC Centre of Excellence for All-sky Astrophysics…
Astrophysicists have discovered black holes that formed up to 12.5 billion years ago – among the oldest examples of the phenomena ever seen. Black holes are objects in the Universe where a large amount…
Predicting the future is a mug’s game. When I reflect back on what we thought we knew at the start of my research career in the mid-1990s, I sound like a wizened octogenarian, recalling a simpler time…
In questioning the fundamental nature of the universe, cosmology regularly grabs the public’s attention. But in an era in which we are observing deeper and more widely than ever before, our knowledge of…
Dark matter has worked its way back into the news in the last few days with the completion of a detection experiment in a tunnel deep under the Italian Alps. Researchers from Columbia University used a…
Where are we within our galaxy? How did our galaxy form? How did it evolve over the aeons? Astronomers have been asking these questions for the past century, and have recently begun discerning the answers…