Space
Cambridge scientist believes faraway planet has ’50/50′ chance of alien life
His discovery could make him one of the most famous people on Earth
Family photo on the moon was left by astronaut in 1972 and has a hidden message
A successful mission both professionally and personally
Long-lost satellite missing for 25 years finally rediscovered in space
It’s tricky to keep track of 27,000 objects flying around Earth’s orbit
NASA discloses how public would be alerted in event of impending asteroid strike
NASA got everything planned