Nasa told to set space sex guidelines before 'things get out of hand' ahead of Moon missions
Experts argue there is an 'urgent' need to look more closely around human reproduction beyond Earth
Archaeologists uncover mystery of Viking port that vanished for 900 years
Haithabu was long thought to have been destroyed along with its inhabitants
Donald Trump ‘set to reveal UFO secrets’ in bombshell speech ‘ready to go’
The President has previously teased that he has heard 'very interesting things' about the possibility of alien life
