it is a star of a crab that reprsents cancer
the cancer cconstellation is a spefic constellation that is between Gemini and Leo
The constellation of cancer has been around for around 5 millions years. Cancer is a zodiac constellation and is represented by the crayfish or crab.
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If you mean the constellation cancer, there is no such thing as a "distance to a constellation". It just doesn't make sense. A constellation is basically a general direction in space.
Aside from Cancer being the dimmest zodiacal constellation, the planet Mars is in Cancer (as of 4/21/10)
5 stars are there in cancer
Cancer.
"The Crab"
The Crab
It is Cancer.
A constellation has no surface, it is an imaginary pattern of stars.
The absolute most common constellation is cancer
You can find a list of them in the Wikipedia article "Cancer (constellation)", under the section "main stars".