Alpha centuri is one of the brightest stars in the universe.
The nearest ones to us are:Sirius- BinaryArcturus - Possible binaryAlpha Centauri ARigel - BinaryProcyon - BinaryAchernar - BinaryAnswer:Alpha Centuri is not a binary star system as it contains three stars, not two. Proximia Centuri aka Alpha Centuri C is the closest star to us. Alpha Centuri A and Alpha Centuri B are the other two stars.
The scientists found out that the closest star to earth beside the sun is Proxima Centuri the found out that on July 15 2002
Proxima Centuri
Alpha proxima centuri
Centuri ended in 1985.
If they had the same intrinsic brightness, then yes. However stars vary enormously in their intrisic brightness, so Deneb is distant, but one of the brightest stars in the Northern sky, whereas proxima centuri is the closest star to us, but so dim that it cannot be seen without a mid-size telescope.
There are no stars that I am aware of named "SMN". The nearest star to Earth is Proxima Centauri, and the next-closest stars are the binary pair Alpha Centauri and Beta Centauri.
The sun. Next closest is proxima centuri.
A red dwarf, i.e. a faint start, believed to be part of the Alpha Centauri system. The closest known star, apart from the Sun.
Polaris is the closest of the three stars.
Black Holes. Black dwarfs, Binary stars, Bok globules, Blue stars, Blue-white stars, Barium stars, Beta Cephei variables, Beta Lyrae stars,