Sirius, also known as the Dog
Star, is the brightest star in the sky. It is also the sixth closest
star to Earth. at 8.6 light years. Its name comes from the Greek word
for scorching. In 1844, F.W. Bessel used analysis of its motion to
determine that it had a companion. This companion was confirmed by
observations in 1862 and is now known to be a white dwarf. Sirius B, the
companion, has received considerable attention itself, since it is the
first white dwarf with a spectrum to show a gravitational red shift as
predicted by the general theory of relativity. Sirius is located in the
constellation Canis Major.
Sirius, also known as the Dog
Star, is the brightest star in the sky. It is also the sixth closest
star to Earth. at 8.6 light years. Its name comes from the Greek word
for scorching. In 1844, F.W. Bessel used analysis of its motion to
determine that it had a companion. This companion was confirmed by
observations in 1862 and is now known to be a white dwarf. Sirius B, the
companion, has received considerable attention itself, since it is the
first white dwarf with a spectrum to show a gravitational red shift as
predicted by the general theory of relativity. Sirius is located in the
constellation Canis Major.
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