Other galaxies

NASA’s Hubble Space Telescope has picked up the faint, ghostly glow of stars ejected from ancient galaxies that were gravitationally ripped apart several billion years ago. The mayhem happened 4 billion light-years away, inside an immense collection of nearly 500 galaxies nicknamed “Pandora’s Cluster,” also known as Abell 2744. The scattered stars are no longer bound to any one galaxy, and drift freely between galaxies in the cluster. By observing the light from the orphaned stars, Hubble…

Estudo publicado na "Nature" revela que o sistema surgiu apenas 1,5 bilhão de anos após o Big Bang — bem antes do que preveem os atuais modelos de formação de galáxias desse tipo

According to relativity, there’s no universal frame of reference. But the Big Bang gave us one anyway.

“Chandra Flashback of the Day – Cygnus OB2: Probing a Nearby Stellar Cradle http://t.co/MQ21mLTA8N #nasa #astronomy”

Astronomers will use NASA’s James Webb Space Telescope to measure a black hole’s mass.

Dwarf galaxies are the most abundant galaxies in the universe. Yet understanding how these systems behave in galaxy group environments is still a mystery.

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