Monday, February 9, 2009

Stars and Planets in Perspective

Take a look at the stars Aldebaran, Antares, Sirius, Vega, Pollux, Arcturus, Aldebaran, Rigel, Deneb, Betelgeuse, Antares and VV Cephei.






Take a look at our corner of the Milky Way Galaxy. The Sun is located in the Orion Arm, which is fairly minor compared with the Sagittarius Arm, closer to the galactic center.

The map shows several stars visible with the naked eye which are located deep within the Orion arm. The most notable group of stars here are main stars in the constellation of Orion - from which the spiral arm gets its name. All of these stars are bright giant and supergiant stars, thousands of times more luminous than the Sun. The most luminous star on the map is Rho Cassiopeia (ρ Cas) - to us 4000 light years away, it is a dim naked eye star, but in reality it is a huge supergiant star 100 000 times more luminous than our Sun.

CURRENT MOON


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