Subaru Gallery
Subaru Gallery TOPActive Galaxy M77
July 22, 2026
Last updated: July 22, 2026
Last updated: July 22, 2026
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M77 (NGC 1068) is a spiral galaxy located relatively close to our Milky Way. At its center lies a supermassive black hole about 10 million times the mass of the Sun. As enormous amounts of energy are released around the black hole, M77 is known as an active galaxy.
Because of its proximity, M77 has been extensively studied across the electromagnetic spectrum, from X-rays to radio waves, using various telescopes, including the Subaru Telescope and ALMA. Recently, observations with the Subaru Telescope's Hyper Suprime-Cam (HSC) have revealed evidence that M77 experienced a previously hidden minor merger with a low-mass satellite galaxy billions of years ago.
(Credit: NAOJ/SDSS/David Hogg/Michael Blanton. Image Processing: Ichi Tanaka)
【Distance from Earth】48 million light-years
【Instrument】Hyper Suprime-Cam (HSC)
M77 (NGC 1068) is a spiral galaxy located relatively close to our Milky Way. At its center lies a supermassive black hole about 10 million times the mass of the Sun. As enormous amounts of energy are released around the black hole, M77 is known as an active galaxy.
Because of its proximity, M77 has been extensively studied across the electromagnetic spectrum, from X-rays to radio waves, using various telescopes, including the Subaru Telescope and ALMA. Recently, observations with the Subaru Telescope's Hyper Suprime-Cam (HSC) have revealed evidence that M77 experienced a previously hidden minor merger with a low-mass satellite galaxy billions of years ago.
(Credit: NAOJ/SDSS/David Hogg/Michael Blanton. Image Processing: Ichi Tanaka)
【Distance from Earth】48 million light-years
【Instrument】Hyper Suprime-Cam (HSC)
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