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Each star in the solar system starts out in a nebula, a cloud of dust particles and gas.
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What type of star is Alnitak?
Alnitak is a very interesting star, because it is not one, but three stars. The main star, Alnitak Aa, is a type 09.5 blue supergiant that is orbited at 11 Astronomical Units (roughly the distance at which Saturn orbits the Sun) by a type O blue dwarf that astronomers call Alnitak Ab. This binary star system is orbited at 680 AUs (roughly the distance of the inner Ort Cloud from the Sun) by the bluish-white type B0 Alnitak B.
How far from earth is the star Alnitak?
Approximately 700 light-years.
What type of stars is our sun and where is it in its life cycle?
Our Sun is a G2V class star, and is about half-way through its expected life. In about 4 billion years or so, the Sun will begin to die, and will expand into a red giant star, which will probably destroy Mercury and Venus, and possible Earth and Mars as well. After a few hundred million years, the Sun will begin to fall in on itself, and will contract to a white dwarf star and over the next several billion years will probably further decay into a red dwarf.
When is a star formed?
Stars form when there is a sufficient concentration of interstellar gas, to begin the process of gravitational collapse into a star.
What is matter from a nebula that has begun to condense under the weight of gravity to begin the formation of a star?
Matter from a nebula that has begun to condense under the weight of gravity to begin the formation of the star is "dust and gas".
How wide is alnitak?
Alnitak is a multiple star: Alnitak Aa has a radius which is 20 time the sun's radius.
What type of star is Alnitak?
Alnitak is a very interesting star, because it is not one, but three stars. The main star, Alnitak Aa, is a type 09.5 blue supergiant that is orbited at 11 Astronomical Units (roughly the distance at which Saturn orbits the Sun) by a type O blue dwarf that astronomers call Alnitak Ab. This binary star system is orbited at 680 AUs (roughly the distance of the inner Ort Cloud from the Sun) by the bluish-white type B0 Alnitak B.
How luminous is alnitak?
Alnitak is a very interesting star, because it is not one, but three stars. The main star, Alnitak Aa, with a luminosity 100000 times that of the Sun is orbited at 11 Astronomical Units (roughly the distance at which Saturn orbits the Sun) by Alnitak Ab, with a luminosity of 20000 times that of the Sun. This binary star system is orbited at 680 AUs (roughly the distance of the inner Ort Cloud from the Sun) by Alnitak B, whose luminosity is roughly 10000 times that of the Sun.
How far from earth is the star Alnitak?
Approximately 700 light-years.
How did the star Alnitak get its name?
Alnitak, like many stars, was named by Arabic astronomers. They gave it the name Al Nitak which means "the belt", because they saw it as part of the belt of the constellation we call Orion.
What constellation has the three sisters?
OR - could you be referring to the "Seven Sisters" ?? If so, that would be The Pleiades - an open cluster in Taurus the Bull. they are saying that the three sisters in the night sky are the stars comprising the orions belt namely alnilam, alnitak and mintaka.alnilam is the star on the left under betelguese the alpha star in Orion constellation, alnitak is the middle and mintaka the star in the right side. cireanareb
Where do star begin their life cycle?
Stars begin their life cycles in a nebula.
Which event in the life cycle of a star causes it to begin to grow?
This will happen when the star starts to run out of hydrogen fuel.
How does a star's life begin?
a star is born when the contracting gas and dust become so hot that nuclear fusion starts
What is the magnitude of alnitak?
it is an apparent magnitude of 1.74
How do stars begin and end their lives?
Sometimes a blue giant star will explode at the end of its life and and if there happens to be a chunk of leftover star substance, a new star will be created.
Do dwarf stars begin their life as planets?
No, but planets or planet dust could be pulled together to make a star, resulting in a dwarf star. (in theory)
