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Is sirius bigger than earth?
Yes. Sirius actually consists of two stars. The main object, Sirius A is not only bigger than Earth but is almost twice the diameter of the sun. The secondary star, Sirius B is a collapsed remnant of a star called a white dwarf. It is slightly smaller than Earth but far denser.
Where is Sirius b located in the night sky?
Sirius, which consists of both Sirius A and Sirius B is in the constellation Canis Major, which, if you are looking south, appears below and to the left of Orion. Sirius B itself is too dim to be seen from Earth; the vast majority of the light from Sirius is from Sirius A. Even then, as a binary system, the two stars are too close together for us to see them separately.
How long does Sirius take to orbit the sun?
Sirius does not orbit the Sun.
How long is a year on Sirius?
Sirius is a star, so it doesn't have an orbit like the planets do. Thus, you can't calculate a year for Sirius. All you can do is estimate its age in Earth years.
How is the star Polaris compared to that of the star Sirius?
Sirius is the brightest star...Polaris is bigger then Sirius, Polaris is 360 to 820 light years away from earth, and Sirius is only 8.6 light years away. The Sirius star is known as the dog constalation, The polaris star is found at the tip and corner of the big dipper and the little dipper
What did the astronomers use to discover that the star Sirius was moving away from Earth?
A freaking telescope
Is sirius moving away from or towards earth?
Towards Earth, at 7.6 km/sec. They say that in the future, we might be in "Sirius" trouble - but the fact is that Sirius doesn't move exactly towards Earth; there is also a sideways movement, so Sirius would miss us.
What method do astronomers use to determine the distance to a relatively close star like Sirius?
Astronomers use the method of parallax to determine the distance to relatively close stars like Sirius. By measuring the apparent shift in position of the star as the Earth moves around the Sun, astronomers can calculate the star's distance based on trigonometry.
How fast is Sirius moving away from Earth in miles per second?
26 tO 36 mps
Why might ancient astronomers have been convinced that the sun and moon revolve around earth?
Because in the sky it looks as if the sun is moving, but actually, the earth is moving but you can't feel it.
How does the Doppler shift determine the distance of Sirius?
It doesn't. The Doppler shift can tell you how fast something is moving towards us or away from us; not how far it is. Only in the case of distant galaxies can this be used to estimate the galaxy's distance, because of the expansion of the Universe (galaxies that move away from us faster are generally farther away).
Using the Doppler effect astronomers can determine a stars what?
How close and far something is from you.
Indian astronomers recognized that earth?
India astronomers recognized that the earth was a sphere.
How can astronomers determine whether a star is moving toward or a way from earth?
They can do so by examining the light from the star. Doppler shift can indicate this
Is Sirius A an Earth-like star?
No. There is no such thing as an "earth-like star" as Earth is a planet, not a star. Sirius A is a star that is larger and brighter than the sun.
Is Sirius A a nearby galaxy?
Sirius is the brightest star in the night sky of earth not a galaxy
What conclusion do astronomers make based on the red shift?
Astronomers conclude that objects in the universe are moving away from Earth due to the observed redshift in their spectra. This supports the idea of an expanding universe, as described by the Big Bang theory. The amount of redshift is proportional to the distance of the object, allowing astronomers to estimate the speed at which galaxies are moving away from us.
