The founder of SpaceX sees humanity's future in the stars and hopes to send 1 million people to live on the red planet.
Tiangong-1 - or Heavenly Palace - was superseded in 2016.
Our first interstellar visitor has been proven to actually be an icy body covered in a protective crust of organic chemicals.
Electric aeroplanes, flying cars, drones and supersonic jets will transform the way we travel
Here's how human space exploration has evolved.
With private enterprise leading the way out into the solar system, the next few decades could see Amazon-ordered satellites, a lunar economic zone and the moon becoming a launchpad for Mars.
SpaceX plans to launch two paying passengers on a tourist trip around the moon next year.
India's space agency says it has set a record in launching 104 satellites at once.
Astronauts’ brains compress and expand in space, MRIs show.