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.
Any constellation is a group of stars that appear to form some kind of pattern, but have no connection with each other. They all happen to be in roughly the same direction from us, but they're all at different distances. So there's no such thing as a constellation's distance from us.
Canis Major is a constellation, not a specific object with a fixed distance from Earth. The stars in Canis Major are at varying distances from Earth, with Sirius, the brightest star in the constellation, located about 8.6 light-years away.
If I understand the question correctly, the answer is YES. There are billions of stars. The earth happens to rotate round the one that we call the sun. All other stars are all a lot further away.
Any constellation is a group of stars that appear to form some kind of pattern, but have no connection with each other. They all happen to be in roughly the same direction from us, but they're all at different distances. So there's no such thing as a constellation's distance from us.
Light from the sun because all light travels at the same speed, and the sun is the closest star to the earth, so therefore the light from the sun reaches the earth before light from other (further away) stars
Absolute magnitude
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.
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.
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.
There is no distance from earth, as all the stars are at different distances!:))
All constellations are imaginary diagrams formed by patterns of many stars - each one it's own unique distance from Earth. So a constellation isn't a particular distance from Earth - as the stars only look like they're next to each other from our perspective here on Earth.
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.
Stars appear brighter depending on their size, temperature, and distance from Earth. Larger and hotter stars emit more light, making them appear brighter. Additionally, stars that are closer to Earth will appear brighter than those that are farther away.
All constellations are imaginary diagrams formed by patterns of many stars - each one it's own unique distance from Earth. So a constellation isn't a particular distance from Earth - as the stars only look like they're next to each other from our perspective here on Earth.
Hercules and all the other constellations are made up of dozens of stars, all of which are different distances from Earth. They only appear in the same plane from our "galactic neighborhood".
All the stars you see are part of the Milky Way, and so are we. So you could say they are the same distance. There is a particular patch through the sky which we particularly refer to as the Milky Way, and there are many stars that are nearer to us than that.
Clusters of stars that all appear to lie at the same distance from us are called star clusters. There are two main types: open clusters, which contain young stars and are loosely bound together, and globular clusters, which contain older stars and are tightly packed.