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M87

Virgo A

Galaxy Virgo 등급 8.6

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카탈로그 지정명
M87
유형
Galaxy
별자리
Virgo
등급
8.6
적경
12h 30m 49.4s
적위
+12° 23' 28.0"
거리
53,500,000 광년
각크기
7.2
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M87 소개

설명

Virgo A is a supergiant elliptical galaxy at the heart of the Virgo Cluster, about 53 million light-years from Earth. It is one of the most massive galaxies in the local universe, containing several trillion stars and spanning about 240,000 light-years. M87 harbors a supermassive black hole of 6.5 billion solar masses — the first black hole ever directly imaged, by the Event Horizon Telescope in 2019.

관측 팁

Located about 1.5 degrees northwest of the midpoint between Epsilon Virginis (Vindemiatrix) and Beta Leonis (Denebola). In a telescope it appears as a large, bright, round glow with a blazing core. The famous relativistic jet (discovered by Heber Curtis in 1918) extends from the nucleus and is visible in 8-inch or larger telescopes under excellent conditions as a faint spike extending from the core. Best observed from March through June.

역사

Discovered by Charles Messier on March 18, 1781. In 1918, Heber Curtis noticed a 'curious straight ray' extending from the nucleus — this was the relativistic jet, one of the most dramatic features in extragalactic astronomy. In April 2019, the Event Horizon Telescope produced the first-ever image of a black hole's shadow, using M87's central supermassive black hole.

재미있는 사실

The first-ever photograph of a black hole was of M87's monster — the image required a virtual Earth-sized telescope (the Event Horizon Telescope, linking radio dishes worldwide) and showed the black hole's shadow surrounded by a ring of superheated gas. M87's relativistic jet shoots plasma at nearly the speed of light for over 5,000 light-years. The galaxy has over 12,000 globular clusters, compared to the Milky Way's 150.

커뮤니티 사진 (1)

Credit: en:NASA, en:STScI, en:WikiSky. License: Public domain. (Wikimedia Commons)

Credit: en:NASA, en:STScI, en:WikiSky. License: Public domain. (Wikimedia Commons)

Skybred Feb 28, 2026