16 February 2018
New study shows Andromeda is not that big after all
... thought it was and that is contains far less dark matter than previously estimated. Also known as Messier 31 or M31, the Andromeda galaxy is approximately 780 kiloparsecs (2.5 million light years) from Earth, spans approximately 220,000...
April 2024
Rotation in the Universe
...includes the line linking their centres of mass. But we perceive M31 as a spiral precisely because it is not rotating in the same... Moreover, rather than zooming past us and off into space, M31 is actually heading towards us, so perhaps we need to find...
06 January 2016
High-Energy X-rays show Andromeda Galaxy in a different light
...," said Ann Hornschemeier of NASA Goddard, the principal investigator of the NuSTAR Andromeda studies. Andromeda, also known as M31, is a spiral galaxy like our own, but is slightly larger in size and at ‘only’ 2.5 million light-years away...
14 September 2016
Gaia's first map hints at big things to come
... galaxies are also visible including the largest galactic neighbour to the Milky Way, Andromeda (also known as M31), seen in the lower left of the image, while below Andromeda is its satellite, the Triangulum galaxy (M33...
