Two astronauts outside the Space Shuttle in orbit 200km above the Earth.
Distances in space are really, really big. The Voyager 1 spacecraft is heading out of our Solar System at 62,000...
If you think it is hard to keep your bedroom tidy, spare a thought for the space around our Earth....
The Science Learning Hub has lots of resources for primary teachers related to the night sky in the Planet Earth...
This article has been republished from The Conversation under Creative Commons licence CC BY-ND 4.0. It was written by Ralph...
See our newsletters here.
