Asteroids will be the unsung heroes that help us become a multiplanetary species.
“People living in free space near the Earth will remain Earthlings. People who settle Mars will become Martians.”
Asgardia will launch its first satellite later this year.
The FAA is already working with SpaceX to ensure its Mars mission complies with the international Outer Space Treaty.
And help us decide whether we want to build a cloud city.
It's not impossible to grow plants in seemingly inhospitable environments.
Scientists believe an autonomous robot construction crew could one day build a space base on Mars.
NASA's 1975 vision for ringed space cities still shapes sci-fi today.