Quote:
Originally Posted by vlazg
Sirius B was the first white dwarf star discovered. Its surface is actually hotter than Sirius A's - a scorching blue-white 24,800 K - yet its total luminosity is only 1/360th of our Sun's. The only way Sirius B can be both hot and dim is to be small - only 92% the size of Earth. From its observed orbital motion and Kepler's laws, Sirius B must have a mass nearly equal to the Sun's - yet its diameter is 50 times smaller. This means that Sirius B has an incredibly high density: about 25 tons per cubic inch, compared to the Sun's density of about 0.5 ounce per cubic inch.
Isn't the universe amazing..........  |
Yes quite incredible... and all captured in 1 sec
