Apollo 8

src: www.spaceflightinsider.com Apollo 8 , the second manned spaceflight mission in the United States Apollo space program, was launched...

Gliese 581c

src: i.ytimg.com Gliese 581c or Gl 581c is a planet orbiting within the Gliese 581 system. It is the second planet discovered in the ...

Cook stove

src: www.woodcookstove.com A biomass cook stove is heated by burning wood, charcoal, animal dung or crop residue. Cook stoves are commonly ...