While the number of known stowaway attempts is few, people have survived with surprising frequency.
The chance of a city-killing asteroid striking Earth is higher than scientists previously believed.
Scientists are watching an iceberg bigger than NZ's largest lake as it slowly moves to sea.
Probably by going into "suspended animation", a strange, frozen state that's about as close you can get to death without dying.
What will be the main motivation for humanity's future space endeavours?Related story: (See story)
The cost of losing nature