Soviet Cosmonaut Sergei Krikalev was stuck aboard a space station
The cosmonaut tragically fell back down to Earth
NASA staff are nuts about this decade-old tradition
A heartfelt tribute 200 miles away
There's increased activity on the sun as it reaches a pivotal moment in its cycle
His world was turned upside down
The cosmonaut shared what it was like to be stuck in space
His home country dissolved while he was trapped in space
The sound can be heard deep beneath the border between France and Switzerland
Sending your friends messages via space has quite literally never been easier
It's the furthest humans have ever travelled
It's worth several times more than the world's economy
We can now see how the Earth will look as it dies
The planet gives us a rare glimpse to what Earth will look like billions of years from now
It contains some incredibly rare metals
NASA stepped in to reassure the public
There's a chance of seeing some Northern Lights
The data backs up a century-old theory
The space agency wants to compliment its roadmap with your work
The asteroid was 621,000 miles away from Earth on Tuesday morning
It completely changed his perspective on life
It has reignited scientists' hope to find evidence of life on Mars
"I find that incredibly exciting. That makes me glad to be alive."
They've admitted to having 'tough times' while stuck in space