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Is a sirius star bigger than a barnard star?
Yes, Sirius is quite big while Barnard's star is small.
Why can the star Sirius be seen without a telescope?
Because it is bright but more importantly, it is relatively close to Earth - a mere 8.6 light years from us, which is close in star terms.
What method do astronomers use to determine the distance to a relatively close star like Sirius?
For nearby stars, the parallax method is used.
Is sirus an asteroid?
No. Sirius is a star.
Which star has the greatest brightness?
Sirius.
Which star is called the dog star?
the dog star is called sirius and is located south west of Orion belts in the southern hemisphere
Is Sirius a dwarf star?
No, it is not a dwarf star. It's fairly large as stars go, but nowhere near the largest. However, because it is both fairly large and fairly close, Sirius is one of the brighter stars in our sky.
What is the brightest star and its brightness?
That is Sirius. Its "apparent magnitude" is minus1.5 approximately. Sirius is the brightest star in the sky for us on Earth, but it's not the most luminous star in "absolute magnitude". The main reason that it is so bright is just that it is very close to us.
Is the Sirius star extremely hot?
Yes - Sirius is a blue-white star - the hottest type of star there is.
How far apart are Sirius A and Sirius B?
Sirius is a binary star system Sirius A and Sirius B.The distance separating Sirius A from B varies between 8.1 and 31.5 AU. (See related question).
Is Sirius also called the North Star?
No. The North Star is Polaris. Sirius is known as the Dog Star.
What makes Sirius the biggest star in the night?
Sirius isn't the biggest, but it certainly is the brightest. What makes it so is the fact that it is rather a large star AND it's relatively close to us - only 9+/- light years form Earth.
Is a sirius star bigger than a barnard star?
Yes, Sirius is quite big while Barnard's star is small.
What is the life and death of Sirius the star?
Sirius's fate might be peaceful; just ejecting it's outer red giant layers to make a planetary nebula. It is 2.02 times the mass of the Sun. However, Sirius has a white dwarf companion. On Sirius B's death, Sirius A might have formed. At the other end, Sirius B might destroy Sirius A. White dwarfs have very strong gravity, and if it is close enough, Sirius B might steal material from Sirius A. When a white dwarf stealing mass from the parent star has enough mass to create iron, the iron triggers a Type 1a supernova. If this happens to Sirius B, Sirius A could either be destroyed by the immense force of the explosion, or become a runaway star, travelling faster than even Barnard's Star. If this is the case, Sirius A might eat smaller stars or crash and burn into a larger star. If it heads towards us if this happens, we would be doomed.
What star is the brigtest of all-stars the sun or the sirius star?
Neither. The Sun only appears bright because it is close. Sirius is far larger and brighter than our Sun. Our Sun is probably in the top 40% of all stars in the Milky Way, while Sirius is probably in the top 5%. But there are many other stars that are far brighter even that Sirius.
Is 'Sirius C' real or not?
It is not real. Sirius is a two-star system containing only Sirius A and Sirius B.
Is Sirius the largest star?
No. Sirius is the brightest star in Earth's night sky, but how bright a star appears is a product of its actual brightness and its distance from us. Sirius itself is actually two stars with Sirius A emitting the vast majority of the system's light. Sirius A is a fairly large star, but others are much larger.
