The UK-led RemoveDebris mission is demonstrating technologies to tackle space junk.
Four Americans are celebrated for their roles in developing the sat-nav Global Positioning System.
Science editor, BBC News website
The Japanese spacecraft Hayabusa 2 will attempt to collect a sample of soil and rock from an asteroid on 22 February, the country's space agency says.Read more
The rover Europe sends to Mars in 2020 to look for life will carry the name of DNA pioneer Rosalind Franklin.