The Event Horizon Telescope (EHT) collaboration, who produced the first ever image of a black hole, has today revealed a new view of the massive object at the centre of the Messier 87 (M87) galaxy: how it looks in polarised light. This is the first time astronomers have been able to measure polarisation, a signature…

Read more Astronomers image magnetic fields at the edge of M87’s black hole

NASA’s Perseverance rover has had a busy first month on Mars’s surface. From Jezero Crater, where Perseverance landed on 18 February, it has been doing as much geology as it can — snapping pictures of its surroundings and analysing the rocks nearby. Already, team scientists have determined that several of the rocks are chemically similar…

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The temporary breakdown of Earth’s magnetic field 42,000 years ago sparked major climate shifts that led to global environmental change and mass extinctions, a new international study co-led by UNSW Sydney and the South Australian Museum shows. This dramatic turning point in Earth’s history—laced with electrical storms, widespread auroras, and cosmic radiation—was triggered by the…

Read more Ancient relic points to a turning point in Earth’s history 42,000 years ago

Permafrost-preserved teeth, up to 1.6 million years old, identify a new kind of mammoth in Siberia. The million-year-old genome is here. Mammoth teeth preserved in eastern Siberian permafrost have produced the oldest ancient DNA on record, pushing the technology close to — but perhaps not past — its limits. Genomic DNA extracted from a trio…

Read more Million-year-old mammoth genomes shatter record for oldest ancient DNA


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