Gemini is not a single star but a c onstellation comprising many stars and other cosmic objects. These vary in their nature - including temperature, distance from earth and so on.
Gemini is an arbitrary patch of the sky. It doesn't have a "temperature" in any meaningful sense of the word.
Hopefully you mean Pollux. brightest star in the constellation Gemini. Approx temperature is about 4,865 Kelvin ~ 4,512 centigrade. See link for a great size comparison.
Here is a complete list of the astronauts who flew on project Gemini Gemini 3 - Gus Grissom & John Young Gemini 4 - Jim McDivitt & Ed White Gemini 5 - Gordon Cooper & Charles Conrad Gemini 6 - Wally Schirra & Tom Stafford Gemini 7 - Frank Borman & Jim Lovell Gemini 8 - Neil Armstrong & Dave Scott Gemini 9 - Stafford & Gene Cernan Gemini 10 - Young & Michael Collins Gemini 11 - Conrad & Richard Gordon Gemini 12 - Lovell & Buzz Aldrin
I Am Gemini was created in 2012.
Gemini
Gemini stands for "The Twins".
Gemini is an Air sign.
Gemini
Gemini = Mapacha
Gemini Barnett's birth name is Gemini Cea Barnett.
Because they carried two people - like Gemini the twins.
Gemini XII was the last Gemini flight, and occurred on November 11-15, 1966. This was the tenth manned Gemini mission.