Gemini is made up of many, many stars - each one having it's own relative distance form Earth. It only looks like Gemini from our perspective... in another solar system, you wouldn't recognize it.
Gemini is a constellation in the night sky and does not have a physical distance from Earth. However, the stars within the Gemini constellation are at varying distances from Earth, with the closest star being about 16.5 light years away and the farthest star being over 900 light years away.
Gemini is a constellation, not a specific object in the sky.
Because they're too far away
What is the distance from Gemini to the sun
The stars in each constellation are at varying distances from our solar system. The star Wolf 359, one of the nearest stars to Earth (7.78 light-years), is in Leo. Gliese 436, a faint star in Leo about 33 light years away. So to answer your question, the constellation Leo is spread out between 7 to 33 light years away. Light travels about 6 trillion miles in one year, so between 42 trillion and 198 trillion miles away.
Puppis is a constellation located in the southern sky. The distance between Earth and the stars in the Puppis constellation varies greatly, as different stars within the constellation are located at varying distances from our planet. Some stars in Puppis may be tens to hundreds of light-years away from Earth.
Aquila is a constellation located about 652 light-years away from Earth.
The stars in the constellation Leo are located at various distances from Earth, ranging from a few tens to a few hundred light-years away. The distance to stars in a constellation can vary significantly due to their individual locations in the sky and their distances from us.
The closest constellation to Earth is Centaurus, which is approximately 4.39 light-years away. This constellation is located in the southern celestial hemisphere and contains several bright stars, including Alpha Centauri, the closest star system to the Sun.
You can't really say how far a constellation is. A constellation is just a group of stars, and even though the stars in a constellation look close together in the sky, in reality they might be very far from each other. Some of the stars could be relatively close to us, and some much farther away. Really, the only question you can answer is how far from earth is each individual star in Perseus is.
Cassiopeia is a constellation located in the northern sky. It is approximately 230 light-years away from Earth.
Constellations are just patterns of stars in the sky as seen from Earth. The individual stars in them have no real connection to each other. They just happen to be part of that pattern we see. The stars in them are all of different distances away from us, each other, and anything in space. So it is impossible to say how far any constellation is from anything.