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A white dwarf is the remnant of a star that has lost most of it mass. When it is formed it is very hot indeed but, as it now has insufficient mas to carry on fusion, it begins to cool down. For objects as massive as stars, even dwarfs, this cooling down takes a long time but eventually a white dwarf will cool down completely and become a black dwarf. Red dwarfs are never very hot as they have barely sufficient mass to effect fusion so don't do it very vigorously. However the fact that they go about their fusion slowly means they can maintain their meager temperatures for a long long time indeed. Some red dwarfs are older than the calculated age of the universe. (which is an interesting paradox) a
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What this person^^^^^ is really trying to say is that : The hottest star is white dwarf.
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What is the nearest red dwarf?
The nearest red dwarf is also our nearest star (after the Sun). Proxima Centauri at approximately 4.2 light years from us.
Very faint very dense Earth-size stars are?
Red and White dwarf stars.
What are the stages the sun goes through?
The sun is born, it burns for about 7-9 billion years, then it becomes a red giant that expands for about 200 years, then the gases dissipate throughout space and the center of the red giant becomes a white dwarf for 8+ billion years. Scientists say that the last stage is a black dwarf but we don't know for sure yet since the universe isn't old enough to pass the white dwarf stage.
A space word starting with R?
Rocket, Rings of Saturn. Radio telescope Red dwarf star Red giant star Redshift (Doppler effect, etc.) Retrograde (motion) Regulus (star) Rigel (star) Radiant (of meteor showers)
What happens to the sun once it used up all the fuel in the core?
It will expand into a red giant, swelling to many times larger than its current state. It will engulf Mercury, Venus, and perhaps Earth. After around a million years like that, it will collapse into a white dwarf star, about the size of earth but much more dense.
