A giant thin stellar stream in the Coma Galaxy Cluster | Astronomy & Astrophysics (A&A)
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
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Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
Astronomers are trying to figure out what could have emitted a cosmic ray with such extraordinary energy.
Disk galaxies like the Milky Way are rare in the Supergalactic Plane. Most of our neighbours are ellipticals. Why?
Galaxies are large systems of stars, gas, dust and dark matter that orbits a center and is bound by gravity. Learn about the characteristics of galaxies.
So much about galaxies remains a mystery. We know what they're made of and that we live in one (the Milky Way), but how many galaxies are in the universe?