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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.
Why would a white dwarf become a red dwarf?
A white dwarf could not become a red dwarf. A white dwarf is a remnant of a dead star. A red dwarf is a star with a very low mass.
Which is the correct order - white dwarf or red?
The correct order is red giant followed by white dwarf. A red giant is a stage in the life cycle of a star where it has expanded and cooled. After the red giant phase, the star sheds its outer layers and the core collapses to form a white dwarf.
Star of life?
Nebule > Star > Red Giant > Red Dwarf > White Dwarf > Supernova > Neutron Star > Black Hole.
Is a red giant star hotter than a white dwarf star?
No. Color, for stars, is (almost) entirely dependent on "surface" temperature, and white stars are significantly hotter then red ones. (The order from coolest to hottest goes brown, red, orange, yellow, yellow-white, white, blue-white, blue).
How a star becames a white dwarf?
A white dwarf is the core of a dead star. As the star runs out of fuel, it expands into a red giant, as the shell of the red giant became a planetary nebula, and the core shrinks and became a white dwarf.
Is a white dwarf smaller than a red dwarf?
Yes, far smaller. A red dwarf is a whole star in and of itself. A white dwarf is the collapsed remnant of the core of a low-to medium mass star. A white dwarf may be about the size of Earth.
What are the two giant and dwarf star?
Red Giants & Blue Giants & White Dwarf star
How do scientists know that Rigel is the hottest star?
Rigel is a blue-white star wich indicates that is a very hot star. you might think red stars are the hottest but no, the hottest are blue-white.
Steps in the life of a star?
the steps in the life of a star is the yellow dwarf,red giant,white dwarf & the black dwarf.
Is the star proxima centauri a white star?
No. It's a red dwarf star.
What is the hottest star out of the dwarf stars?
A newly formed white dwarf will be the hottest of the "dwarfs" - at a temperature of over 150,000 K but this will slowly cool over time. There is a possibility of a hypothetical blue dwarf, when a red dwarf exhausts it's supply of hydrogen. However, because of the slow speed of fusion of a red dwarf, the Universe is not yet old enough to have created a blue dwarf, so no measurements can be made on it's possible temperature.
What does a life cycle of a star look like?
Nebule > Star > Red Giant > Red Dwarf > White Dwarf > Supernova > Neutron Star > Black Hole.
