Category Archives: Astrophysics

A Dark Matter mystery explained?

A paper on the arXiv this morning offers an explanation for an intriguing, long-standing anomalous result from the DAMA experiment. According to our current best model of how the universe hangs together, the Earth orbits the Sun within a galactic … Continue reading

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Brief Answers to the Big Questions by Stephen Hawking – review

Back in the Guardian (well, the Observer actually) with a review of Stephen Hawking’s final book . A couple of paragraphs didn’t make the edit; no complaints from me about that, but I put them here mainly for the sake of … Continue reading

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Anti-protons, Dark Matter and Helium

First post of “Postcards from the Energy Frontier” at the Cosmic Shambles Network. A new measurement at CERN tells us something about the way particles travel through interstellar space. Which in turn may help a satellite on the International Space … Continue reading

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First measurement of the Lyman-alpha lines of anti-hydrogen

The ALPHA experiment (no relation) at the CERN antiproton decelerator has just published the first measurement of the Lyman-alpha lines of anti-hydrogen (a positron bound to an antiproton)¹.  There is an excellent summary of the measurement here, written by Ana … Continue reading

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