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Articles on Dark matter

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Knowing where cosmic rays don’t come from brings scientists another step closer to determining their origin. NSF/J. Yang

An extragalactic mystery: where do high-energy cosmic rays come from?

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…

Repellant dark matter confounds astronomers

In a result which has baffled astronomers at NASA’s Chandra X-ray Observatory, dark matter has been observed separating from…

Dark matter core challenges theories

The collision of several, massive galaxy clusters has left behind a clump of dark matter, potentially challenging existing…
If the signs are right, fundamental equations of cosmology may need altering. waljoris

Is life on Earth due to a quirk in the laws of physics?

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 mapped the cosmic filaments that bind the Milky Way together, which may help reveal how galaxies form. Michael Boylan-Kolchin, University of California Irvine

Scientists track silvery threads that feed the Milky Way

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…
Even the Hubble telescope, which took this picture of Bright Spiral Galaxy M81, is not capable of taking the wide-angle shots needed for all sky astrophysics, so new equipment must be invented. NASA http://www.nasa.gov

New all-sky astrophysics research centre to tackle the big questions

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…
Artistic view of a close-up of a supermassive black hole. This image shows the material surrounding the black hole, which ultimately will fall in the central region releasing the X-ray radiation detected in this work. NASA/CXC/A.Hobart

Scientists discover ancient black holes

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…
The universe teems with energy and matter we don’t understand. stuant63/Flickr

Adventures in the dark side of cosmology

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…
Scientists believe dark matter makes up 23% of the universe. NASA

New chatter on dark matter

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…
Viewed from afar, the Milky Way might appear similar to the galaxy known as NGC 7331. R. Jay GaBany/NASA

Explainer: a beginner’s guide to the galaxy

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…

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