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The Andromeda Galaxy is approaching the Milky Way at about 110 kilometres (68 miles) per second. [134] It has been measured approaching relative to the Sun at around 300 km/s (190 mi/s) [ 1 ] as the Sun orbits around the center of the galaxy at a speed of approximately 225 km/s (140 mi/s).
The Andromeda Galaxy is approaching the Milky Way at about 110 kilometres per second (68.4 mi/s) [2] [8] as indicated by blueshift. However, the lateral speed (measured as proper motion ) is very difficult to measure with sufficient precision to draw reasonable conclusions.
Current measurements suggest the Andromeda Galaxy is approaching the Milky Way at 100 to 140 km/s (220,000 to 310,000 mph). In 4.3 billion years, there may be an Andromeda–Milky Way collision, depending on the importance of unknown lateral components to
A parsec (pc) is defined as the distance at which one astronomical unit (AU) subtends an angle of exactly one arcsecond (1/3600 of a degree). A megaparsec is equivalent to one million parsecs: 1 Mpc = 1,000,000 pc. In more familiar terms, 1 megaparsec is approximately: 3.26 million light-years (ly) 3.09 × 10 19 kilometers (km) 1.92 × 10 19 miles
The proper distance represents the distance ... presence of a planet orbiting a star in the Andromeda ... as external to the Milky Way. [195] [204] [206] [208 ...
Cepheid variable stars were the key instrument in Edwin Hubble's 1923 conclusion that M31 (Andromeda) was an external galaxy, as opposed to a smaller nebula within the Milky Way. He was able to calculate the distance of M31 to 285 kpc, today's value being 770 kpc. [citation needed]
Picture Galaxy Type Distance from Earth Magnitude Group Membership Notes Diameter (ly) Millions of light-years Mpc M m - Milky Way: SBbc 0.0265 (to the galactic center) [2] 0.008 [2] ...
This is a list of luminous blue variable stars in order of their distance from Earth ... Milky Way galaxy (confirmed LBVs) Star system ... Andromeda LGGS J004051.59 ...