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- Andromeda, also known as Messier 31 (M31), is a spiral galaxy located about 2.5 million light years away. It is thought that the Milky Way and Andromeda will collide several billion years from now. The black holes located in both galaxies will then reside in the large, elliptical galaxy that results from this merger.
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Supernovae erupt in the Andromeda Galaxy's star-filled disk and eject these heavier elements into space. Over the Andromeda Galaxy's lifetime, nearly half of the heavy elements made by its stars have been ejected far beyond the galaxy's 200,000-light-year-diameter stellar disk.
Sep 12, 2024 · Andromeda Galaxy, great spiral galaxy in the constellation Andromeda, the nearest large galaxy. It is one of the few visible to the unaided eye, appearing as a milky blur. The Andromeda Galaxy is located about 2,480,000 light-years from Earth, and its diameter is approximately 200,000 light-years.
- The Editors of Encyclopaedia Britannica
The Andromeda Galaxy (M31) is the closest large galaxy to the Milky Way and is one of a few galaxies that can be seen unaided from the Earth. In approximately 4.5 billion years the Andromeda Galaxy and the Milky Way are expected to collide and the result will be a giant elliptical galaxy.
- How to See Andromeda in The Night Sky
- Colliding Galaxies
- A Possible Exoplanet
- Andromeda and The Great Debate
- Addtional Resources
Andromeda is visible to the naked eye but only when viewed in dark skies and ideally on a moonless night. In many places, it is visible the entire year for at least part of the night but is highest in the sky and therefore easiest to spot in August and September, according to EarthSky. There are several ways to find Andromeda. One of the easiest is...
Andromeda and the Milky Way are slowly drifting towards each other, leading scientists to conclude that they will likely collide about 4.5 billion years from now, according to a 2019 study. The two galaxies will most likely form a giant elliptical,or oval, galaxy, according to NASA. It's not clear what might happen to our planet and solar system du...
In 1999, scientists noticed a minute change in Andromeda known as a microlensing event, which they called PA-99-N2. Gravitational lensing happens when something extremely massive, like a large galaxy, bends the light of a far more distant background object behind it, sometimes creating multiple distorted images of that object. With microlensing, a ...
In the 1920s, the distant galaxy became part of the Great Debate between American astronomers Harlow Shapley and Heber Curtis. At the time, astronomers thought the Milky Way composed the whole universe, and the strange patches such as Andromeda (known as "nebulas" at the time) lay inside of them. Curtis had spotted various novas in Andromeda and ar...
Explore the Andromeda galaxy in incredible detail with this zoomable image from the Hubble space telescope. If you're interested in photographing the Andromeda galaxy, AstroBackyard has some useful resources on the equipment you'd need. Astronomy.com answers an interesting question "If the universe is expanding, why will the Milky Way and Andromeda...
Jun 12, 2013 · Andromeda, also known as Messier 31 (M31), is a spiral galaxy located about 2.5 million light years away. It is thought that the Milky Way and Andromeda will collide several billion years from now. The black holes located in both galaxies will then reside in the large, elliptical galaxy that results from this merger.
Are they habitable? Does the Andromeda Galaxy have planets? Andromeda Galaxy – credit: David Dayag. There is currently only one very strong candidate planet in the Andromeda Galaxy, temporarily named PA-99-N2. It was detected because of a microlensing event in 1999.
Hubble traces densely packed stars extending from the innermost hub, seen on the left side of this image, of Messier 31 (M31), the Andromeda Galaxy. Moving out from this central galactic bulge, the panorama sweeps across lanes of stars and dust to the sparser outer disk.
