SCIENCE

How the “meter” came to be exactly one meter long | by Ethan Siegel | Starts With A Bang! | Nov, 2025

Press enter or click to view image in full size From very human beginnings to definitions based on gravity, the…

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Ask Ethan: Can Weber bars detect gravitational waves? | by Ethan Siegel | Starts With A Bang! | Nov, 2025

When a gravitational wave passes through a location in space, it causes an expansion and a compression at alternate times…

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Astounding stream of stars caught escaping from nearby galaxy | by Ethan Siegel | Starts With A Bang! | Nov, 2025

Press enter or click to view image in full size This image, from the Vera Rubin Observatory’s “First Look” release,…

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Ask Ethan: Could evolving dark energy lead to a Big Crunch? | by Ethan Siegel | Starts With A Bang! | Nov, 2025

Press enter or click to view image in full size The far distant fates of the Universe offer a number…

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Why aliens might not “speak physics” the same way we do | by Ethan Siegel | Starts With A Bang! | Nov, 2025

Press enter or click to view image in full size Touted as UFO lights, this 2011 photograph over Liverpool does,…

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Ask Ethan: Why couldn’t the Universe have expanded forever? | by Ethan Siegel | Starts With A Bang! | Oct, 2025

Press enter or click to view image in full size There is a large suite of scientific evidence that supports…

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5 undeniable, truthful facts about dark matter | by Ethan Siegel | Starts With A Bang! | Oct, 2025

Press enter or click to view image in full size This image showcases the massive, distant galaxy cluster Abell S1063.…

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Is our first “galaxy-quasar hybrid” also a Little Red Dot?

Found by Hubble before JWST’s launch, GNz7q looked like a mix of a galaxy and a quasar. Was it actually…

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Ask Ethan: Is the Hubble tension the same thing as dark energy? | by Ethan Siegel | Starts With A Bang! | Oct, 2025

Press enter or click to view image in full size This slice of the DESI data maps celestial objects from…

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Cosmic inflation’s biggest criticisms can’t undermine its success | by Ethan Siegel | Starts With A Bang! | Oct, 2025

Press enter or click to view image in full size From whatever pre-existing state started it, inflation predicts that a…

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