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Well, they clearly aren't for closer stars, astronomers measure the angle the star's light hits the Earth at 6 month intervals - as the Earth rotates around the sun at a known distance, it's simple geometry given the two angles and the diameter of the Earth's orbit to calculate the distance of the star in question and the distance varies.
What else can I help you with?
What compares the brightness of stars as if they were the same distance from earth?
midorz
Stars in the night sky always maintain the same distance from what?
Stars in the night sky maintain the same distance from Earth. Despite their different distances from us, the stars appear to be at a fixed distance from each other when observed from our perspective on Earth.
What is the magnitude of a star if all stars were the same distance from earth?
Absolute magnitude
If two stars have the same apparent magnitude are they the same distance from Earth?
No. Brighter distant stars can have the same apparent magnitude as fainter stars that are closer.(Absolute magnitude does not refer to actual brightness, but rather to what the brightness of a star would likely be at an arbitrary distance of 10 parsecs, rather than its actual distance.)
Is it true that two stars that have the same brightness are the same distance from earth?
Not necessarily. Two stars can have the same brightness but be at different distances from Earth. The distance of a star affects how bright it appears to us, so a closer dim star may appear as bright as a farther bright star.
What are stars in space called?
The same as on Earth - Stars
Are all the stars in a constellation the same distance away from us?
No, stars in a constellation can vary greatly in distance from us. Some stars may be closer while others are much farther away. Constellations are simply patterns of stars as seen from Earth, and the stars within them may be at different distances.
Relationship between stars distance to earth and luminosity?
Generally speaking, the apparent luminosity would be an inverse square relationship, which is to say, if the same star was at twice the distance, a quarter of the light would be reaching the observer. But absolute luminosity can of course vary without regard to distance from Earth - dim stars can be close, or bright stars distant, or vice-versa.
What is the distance in light years of Cenaturus constellation from earth?
A constellation is basically a general direction in space. It doesn't have a definite distance. Different stars in a constellation are at different distances. The closest star from Earth happens to be in the Centaurus constellation, at a distance of about 4.2 light-years. But please note that other stars in the same constellation are much, much farther from us.A constellation is basically a general direction in space. It doesn't have a definite distance. Different stars in a constellation are at different distances. The closest star from Earth happens to be in the Centaurus constellation, at a distance of about 4.2 light-years. But please note that other stars in the same constellation are much, much farther from us.A constellation is basically a general direction in space. It doesn't have a definite distance. Different stars in a constellation are at different distances. The closest star from Earth happens to be in the Centaurus constellation, at a distance of about 4.2 light-years. But please note that other stars in the same constellation are much, much farther from us.A constellation is basically a general direction in space. It doesn't have a definite distance. Different stars in a constellation are at different distances. The closest star from Earth happens to be in the Centaurus constellation, at a distance of about 4.2 light-years. But please note that other stars in the same constellation are much, much farther from us.
Are the star in big dipper in the same brightness?
No. The stars are not only not the same brightness, they are not the same distance from us - they just "appear" to be as part of the optical illusion of earthbound astronomy. They are all of varying brightness, though fairly close in brightness overall.
Why do you use the sun to study stars?
The sun is the anchorpoint of the earth. We need to have a point of reference in order to measure distance. The sun is this point of reference as it in relation to earth does not move. We know the distance from the sun to the earth so that gives us another referance. All we now need is the angle from earth toward a star and we can sort of calculate distance to the star :-) There is a little bit more to it but the basic idea is there :-) When it comes to actually studying stars. We know that other stars with same type of light as our sun will be approximately same size. Yet again it is used as a point of reference. Regards.
Are all stars the same distance from the earth?
No two planets within our solar system have the same exact size. However, Earth and Venus are quite close - their diameters differ by only 652km.
