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What else can I help you with?
Is the sun a giant star?
No, The sun is at the middle stages of its life. In another couple of million years, it will be come a red giant. When the sun becomes a red giant, it will start to expand and engulf Mercury and Venus. Earth will be inhabitable because of its enormous size and heat. Then, as it keeps expanding it will become a supergiant. No, the definition of a supergiant is a star that has a diameter at least 100 times that of the sun and that is 100 to more than 10,000 times as bright.
Is Sirius A considered a supergiant?
No. The diameter of Sirius A is about 1.7 times that of the sun. To be considered a supergiant a star must be at least 100 times the diameter of the sun.
In what order are the planets listed from smallest to biggest in the solar system?
In order from least to greatest in mean radius:Vesta (protoplanet)Pallas (protoplanet)Charon+ (dwarf planet)Orcus (dwarf planet)Quaoar (dwarf planet)Ceres (dwarf planet)Sedna (dwarf planet)"Snow White" [2007 OR10]* (dwarf planet)Haumea* (dwarf planet)Makemake (dwarf planet)Pluto+ (dwarf planet)Eris (dwarf planet)Mercury (terrestrial planet)Mars (terrestrial planet)Venus (terrestrial planet)Earth (terrestrial planet)Neptune (ice giant)Uranus (ice giant)Saturn (gas giant)Jupiter (gas giant)*There is a slight discrepancy as to how Haumea ought to be measured, due to its unusual shape. This makes it slightly unclear as to which is considered larger between Haumea and "Snow White."+Binary planet
A large bright star whose hot core has used most of its hydrogen is a?
Red giant. The word "most" in the question isn't quite accurate. There is still a lot of hydrogen remaining in a star when the amount of helium becomes a problem. Hydrogen in the star is fused into helium, and the helium is at least roughly analogous to the ash in a wood fire; it is what's left over from the hydrogen fusion, and too much gets in the way. When the proportion of helium gets too high - above about 50% is enough - the helium begins to interfere with the hydrogen fusion process. Without enough new heat generated by fusion, the star begins to collapse under the influence of gravity. The compression increases the temperature, and when the pressure and temperature gets high enough, the helium "ash" in the core becomes helium "fuel" for the Red Giant phase.
How long does it take for a white dwarf to cool?
It is estimated to take at least several hundred trillion years.
Is the sun a giant star?
No, The sun is at the middle stages of its life. In another couple of million years, it will be come a red giant. When the sun becomes a red giant, it will start to expand and engulf Mercury and Venus. Earth will be inhabitable because of its enormous size and heat. Then, as it keeps expanding it will become a supergiant. No, the definition of a supergiant is a star that has a diameter at least 100 times that of the sun and that is 100 to more than 10,000 times as bright.
What is the dim star that forms from a collapsed red giant called?
It is called a white dwarf. It is the penultimate stage of a star the size of the Sun, which progresses with age from a yellow or orange star, to a red giant, to a white dwarf, and ultimately (after an immensely long period of time) a black dwarf. (There are no confirmed black dwarf stars because their formation may take much longer than the current age of the universe.)
Is Sirius A considered a supergiant?
No. The diameter of Sirius A is about 1.7 times that of the sun. To be considered a supergiant a star must be at least 100 times the diameter of the sun.
In what order are the planets listed from smallest to biggest in the solar system?
In order from least to greatest in mean radius:Vesta (protoplanet)Pallas (protoplanet)Charon+ (dwarf planet)Orcus (dwarf planet)Quaoar (dwarf planet)Ceres (dwarf planet)Sedna (dwarf planet)"Snow White" [2007 OR10]* (dwarf planet)Haumea* (dwarf planet)Makemake (dwarf planet)Pluto+ (dwarf planet)Eris (dwarf planet)Mercury (terrestrial planet)Mars (terrestrial planet)Venus (terrestrial planet)Earth (terrestrial planet)Neptune (ice giant)Uranus (ice giant)Saturn (gas giant)Jupiter (gas giant)*There is a slight discrepancy as to how Haumea ought to be measured, due to its unusual shape. This makes it slightly unclear as to which is considered larger between Haumea and "Snow White."+Binary planet
How many stars are there in a dwarf galaxy?
at least 10 billion.
A star that has expanded and cooled?
The general category is known as a dead star. There are three kinds of dead stars: 1. a white dwarf, which oddly enough by its description does not seem to be a dead star - "a dim very hot star" 2. a neutron star (viewed as a typical pulsar close to a normal star, but emitting x-rays); or 3. A black hole. The smallest and least dense stars become white dwarfs and the biggest, densest stars become black holes.
Is a red dwarf star most stars?
Red dwarf stars are the commonest stars, at least in the region of space around our Sun.
What is the average number of stars in a dwarf galaxy?
at least 10 billion.
What sequence of stars is listed in order of increasing luminosity?
The sequence of stars listed in order of increasing luminosity typically includes red dwarfs, main-sequence stars (like our Sun), giant stars, and supergiant stars. Red dwarfs are the least luminous, followed by main-sequence stars, then giant stars, and finally supergiants, which are the most luminous. This order reflects the increasing energy output and size of the stars as they evolve.
Are there at least 7 trillion or more dwarf galaxies in the observable universe?
Yes, the current Dwarf galaxies in the visible universe are 7 trillion.
How big does a supergiant have to be to form a black hole?
BIG! A supergiant must be at least eight times the size of our sun to create a force as strong as a black hole. And one million earths can fit into our sun, imagine that eight times; That's eight million earths!
Do some dwarf galaxies contain 1 billion stars?
Yes. Some dwarf galaxies contain at least 1 billion stars.
