Ethel the space alien lived on the planet Casa, a long way away from Earth. She loved travelling and making new friends. One day Ethel started a new job as a 'Faraway Friend Finder'. Her mission ...

Narrator: Scientists have studied a lot of pregnant animals in space, including salamanders, fish, and rats, but not humans. Over 60 women have traveled to space, yet none were pregnant during the ...

Scientists have been searching for evidence of extraterrestrial life for decades. So, where are all the aliens? Here are 12 intriguing theories ...