Andromeda I is a dwarf spheroidal galaxy (dSph) about 2.40 million light-years away in the constellation Andromeda. Andromeda I is part of the local group of galaxies and a satellite galaxy of the Andromeda Galaxy (M31). As of 2005, it is the closest known dSph companion to M31 at an estimated projected distance of ~150,000 light-years.
Andromeda I was discovered by Sidney van den Bergh in 1970 with the Mount Palomar Observatory 48-inch telescope. Further study of Andromeda I was done by the WFPC2 camera of the Hubble Space Telescope. This found that the horizontal branch stars, like other dwarf spheroidal galaxies were predominantly red. From this, and the abundance of blue horizontal branch stars, along with 99 RR Lyrae stars detected in 2005, lead to the conclusion there was an extended epoch of star formation. The estimated age is approximately 10 Gyr. The Hubble telescope also found a globular cluster in Andromeda I, being the least luminous galaxy where such a cluster was found.
Huge spiral galaxy in the background is the Andromeda Galaxy (Messier 31). Small eliptical object to the right is Messier 32, which is another satellite of M31.
Speed of camera in this video is around 0.25 lighyears per second
0.25 ly/sec = 7 888 888 c = 9 125 375 007 000 000 kph
Lenght of camera path is around 4000 lightyears
Funfuct: I recorded this video 7th June 2022, but something was wrong with bitrate and this 5 hour long movie was 173 gb in size. For that reason it waited so long to be uploaded.
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