The Queen guitarist answers your questions, on regretting never playing with John Lennon, his love of Pink and Avril Lavigne, and his beef with Michael Eavis
"The only reason for time is so that everything doesn't happen at once." -Albert Einstein
Now that you know how many galaxies are in our expanding Universe, you might be wondering about their speeds.
Infrared is a form of electromagnetic radiation with a longer wavelength than visible light, revealing elements of the Universe invisible to the human eye.
A source of speculation since the 19th Century, a new study may reignite the debate about a planet that could be lurking at the edge of our Solar System.
Ninth Planet possibly discovered by Brit professor – but even he s not sure dailystar.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from dailystar.co.uk Daily Mail and Mail on Sunday newspapers.