failed

Why Isn’t Jupiter a Star?

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The smallest known main-sequence star in the Milky Way galaxy is a real pixie of a thing. It’s called EBLM J0555-57Ab, a red dwarf 600 light-years away. With a mean radius of around 59,000 kilometers, it’s just a smidge bigger than Saturn. That makes it the tiniest known star to support hydrogen fusion in its core, … Read more

In this pivotal year, rich nations failed woefully on climate justice

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By Graham Lawton Michelle D’urbano AND so this is Christmas, and what have we done? A year ago, I was writing a preview of 2021, which was shaping up to be pivotal for our fractious relationship with the environment. The UN was getting ready to launch not one, but two decades: one on ecological restoration … Read more

Space cow: Bizarre explosion was probably a failed supernova

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By Leah Crane Illustration of a cow in space Shutterstock An explosion that baffled astronomers in 2018 may finally have an explanation. Observations of X-rays from the blast have revealed that it was probably a massive star that only partially blew up, leaving behind either a dense neutron star or a small black hole – … Read more