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I've heard that blue stars are the hottest,even hotter than the sun. What is the hottest blue star? And how hot is it?

2007-04-27 13:25:36 · 6 answers · asked by Anonymous in Science & Mathematics Astronomy & Space

6 answers

Even hotter than type O stars are the central stars of planetary nebulae. These are the cores of red giants that have lost their hydrogen envelopes and are on their way to becoming white dwarfs, The central star of NGC 2440 in Puppis has been measured at 220,000 K (395,000 °F). Neutron stars are even hotter, at up to 1 million K (1.8 million °F) , but they are also very tiny.

2007-04-27 14:44:37 · answer #1 · answered by injanier 7 · 1 0

The hottest blue stars are about 40,000 degrees at the surface, and many millions at the core - much hotter than the sun, which is 16 million in the core. We measure star temp at the surface, however, so the sun is a relatively cool star at about 4500 degrees on the surface.

The Sun is the only star in our solar system. Vega and Rigel are hot blue stars in the constellations Lyra and Orion.

2007-04-27 13:31:42 · answer #2 · answered by eri 7 · 0 0

Well because of the way you worded the queston the answer would be the sun becasue the solar system is the sun and its 8 planets. But yes the blue stars are hotter then the yellow and red stars.

2007-04-27 16:37:50 · answer #3 · answered by Mr. Smith 5 · 0 0

ung sun stands second in the cold and the stars Rigel the most hottest star

2014-02-09 21:00:42 · answer #4 · answered by Anonymous · 0 0

the sun is the hottest star!!!

2007-04-27 13:28:43 · answer #5 · answered by D-ster 2 · 0 4

I dunno, them yellow ones are mighty sexy too. Don't count them out!

2007-04-27 13:28:52 · answer #6 · answered by Odysseus J 3 · 0 2

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