Galaxies

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Astronomy explained What is a galaxy?

A simulation showing Earth’s night sky in 3.75 billion years as Andromeda collides with the Milky Way. Credit: NASA; ESA; Z. Levay and R. van der Marel, STScI; T. Hallas; and A. Mellinger

Andromeda-Milky Way collision: what happens when the galaxies collide?

An image of the Andromeda Galaxy by NASA's Galaxy Evolution Explorer.

How to see the Andromeda Galaxy

Black Eye Galaxy. Image credit ESA/Hubble & NASA, J. Lee and the PHANGS-HST Team. Acknowledgement: Judy Schmidt

Eye On The Sky The strange secrets of the Black Eye Galaxy

I. HEYWOOD (OXFORD/RHODES/SARAO), NARVIKK/ISTOCK/GETTY. Two giant radio galaxies found with the MeerKAT telescope, with their light shown in red

Two giant radio galaxies found are among brightest in the Universe

Leo constellation. Credit: Credit: CEDIC Team + Hubl Bernard / CCDGuide.com

Deep-sky tour 6 galaxies to spot in the Leo constellation

Magnetic field lines on the Whirlpool Galaxy, as seen by the Hubble Space Telescope and SOFIA Observatory. Credit: NASA/the SOFIA science team/A. Borlaff/NASA/ESA/S. Beckwith (STScI) and the Hubble Heritage Team (STScI/AURA)

Eye On The Sky Whirlpool Galaxy's magnetic field lines mapped

Triple galaxy merger J1027, as seen by the Hubble Space Telescope. Credit: X-ray: NASA/CXC/Univ. of Michigan/A. Foord et al.; Optical: SDSS & NASA/STScI

Eye On The Sky Fate of black holes studied in triple galactic mergers

45 million lightyears from Earth lies NGC 1097, a spiral galaxy in the constellation of Fornax with a beautiful star-bursting nuclear ring surrounding it. This image was captured using the MUSE instrument on the Very Large Telescope operated by the European Souther Observatory in Chile's Atacama Desert. Credit: ESO/TIMER Survey

Eye On The Sky Ring of star formation around galactic supermassive black hole

6 beautiful galaxy collisions seen by the Hubble Space Telescope

Eye On The Sky 6 beautiful galaxy collisions seen by the Hubble Space Telescope

NGC 2799 (left) and NGC 2798 (right) in a galactic merger. Credit: ESA/Hubble & NASA/ SDSS/J. Dalcanton, CC BY 4.0; Acknowledgement: Judy Schmidt (Geckzilla)

Eye On The Sky Strange galactic merger captured by Hubble Space Telescope

A galactic collision looking rather like a Halloween pumpkin. Credit: NASA, ESA, and W. Keel (University of Alabama)

Galactic Halloween pumpkin snapped by Hubble Space Telescope

Do the high energy jets we see in the most active systems, suggest growing black holes? Credit: draco-zlat/getty images

BL Lacertae objects: attempting to understand a cosmic riddle

M81 and M82, by Alvaro Ibanez Perez

7 galaxies to observe in the night sky

Great Barred Spiral Galaxy NGC 1365, captured by the Hubble Space Telescope. Credit: Credit: ESA/Hubble & NASA, J. Lee and the PHANGS-HST Team Acknowledgement: Judy Schmidt (Geckzilla)

Eye On The Sky Hubble views spiral galaxy as part of star formation survey