Ars Technica

The Mystery of Betelgeuse’s Dimming Has Finally Been Solved

In December 2019, astronomers noticed a strange, dramatic dimming in the light from Betelgeuse, a bright red star in the Orion constellation. They puzzled over the phenomenon and wondered whether it was a sign that the star was about to go supernova. Several months later, they had narrowed the most likely explanations to two: a …

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A New Type of Supernova Unlocks Thousand-Year-Old Stellar Mysteries

Around July 4, 1054, Chinese astronomers recorded a “guest star” that shone so brightly, it was visible in broad daylight for 23 days. The remnants of that long-ago supernova now form the Crab Nebula, which has long been of great interest to astronomers. Some have hypothesized that SN 1054 (as it is now known) was …

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SolarWinds Hackers Continue Assault With a New Microsoft Breach

The nation-state hackers who orchestrated the SolarWinds supply chain attack compromised a Microsoft worker’s computer and used the access to launch targeted attacks against company customers, Microsoft said in a terse statement published late on a Friday afternoon. Ars Technica This story originally appeared on Ars Technica, a trusted source for technology news, tech policy …

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Scientists Find Ancient Critters Alive After 24,000 Years in Permafrost

Rotifers are microscopic freshwater-dwelling multicellular organisms. They’re already known to withstand freezing (even in liquid nitrogen), boiling, desiccation, and radiation, and the group has persisted for millions of years without having sex. The humble yet remarkably hardy bdelloid rotifer has now surprised researchers yet again—a recent study unearthed 24,000-year-old Siberian permafrost and found living (or …

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