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Studying local galaxies from an outside perspective | BBC Sky at Night Magazine

Studying local galaxies from an outside perspective | BBC Sky at Night Magazine
skyatnightmagazine.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from skyatnightmagazine.com Daily Mail and Mail on Sunday newspapers.

Stacy mcgaughChris lintottGroup galaxiesMilky wayLocal groupAndromeda galaxyLocal group galaxiesExternal perspective

Ask Ethan #94: Could dark matter not exist? (Synopsis)

“I soon became convinced… that all the theorizing would be empty brain exercise and therefore a waste of time unless one first ascertained what the population of the universe really consists of.” -Fritz Zwicky

Wikimedia commonsFritz zwickyStacy mcgaughNewtonian dynamics

The Enigma of Dragonfly 44, the Galaxy That s Almost Invisible

A growing catalog of huge but dim “ultra-diffuse” galaxies is forcing astronomers to invent new theories of galactic evolution.

United statesVan dokkumPaul bennetStacy mcgaughPieter van dokkumYale universitySpace telescope science institute in baltimoreCase western reserve universitySpace telescope science instituteMilky wayQuanta magazineDark matter

JWST s First Glimpses of Early Galaxies Could Break Cosmology

The James Webb Space Telescope’s first images of the distant universe shocked astronomers. Is the discovery of unimaginably distant galaxies a mirage, or a revolution?

New yorkUnited statesRochester institute of technologyCase western reserve universityMilky wayMagallanesy antáica chilenaScuola normale superioreRiccardo giacconiGarth illingworthTomasso treuAndrea ferraraMichael boylan kolchinStacy mcgaughJeyhan kartaltepeTom bakxLos angeles

Dark matter faces its biggest challenge of all (Synopsis)

"Nothing in the standard cosmological model predicts this, and it is almost impossible to imagine how that model could be modified to explain it, without discarding the dark matter hypothesis completely." -David Merritt

David merrittJim schombertFederico lelliJ tumlinson stscStacy mcgaughRadial acceleration relationRotationally supported galaxies

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