Mmastodon ScienceSpace first seen 2 d ago, last 2 d ago, peak #1

Astronomers revisit the Hubble constant debate

Original: Ever since the # Universe ’s expansion was discovered, we established a relationship between how far away an object is a

A science communication post is walking readers through the Hubble-Lemaître Law, the straight-line relationship between an object's distance and the speed at which it recedes from us, a cornerstone of cosmology since the discovery of the universe's expansion. It focuses on the slope of that line, known as the Hubble constant, a value that remains one of the most contested numbers in physics because different measurement methods keep disagreeing.

Why now: The Hubble constant tension between competing measurements remains an active and unresolved debate in cosmology.

Hubble constantHubble-Lemaître Lawuniverse

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Evidence

• Ever since the # Universe ’s expansion was discovered, we established a relationship between how far away an object is and how fast it appears to be receding from us: a straight-line fit known as Hubble-Lemaître Law. The slope of that line has been called the “Hubble constant”… · mustapipa@scicomm.xyz · 11

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