An Isle of Wight astronomer has organised an international campaign to wave at the International Space Station (ISS) over Christmas. Dr Lucy Rogers has teamed up with UK and US astronomers to "show solidarity with our fellow humans in space". Some 600 participants have followed the team on Twitter to co-ordinate waving between Christmas and New Year. Read more
ISS Wave is a round-the-world wave to the humans aboard the International Space Station (ISS) by their fellow humans on the Earth - choreographed by a grassroots Twitter campaign (@ISSwave). Read more