For one night only, Professor Brian Cox takes an audience of celebrity guests and members of the public on a journey into the wonderful universe of the Doctor.
The nature of light Duration: Would you ever want to meet the Weeping Angels? Share On lineapp Share On lineapp. And on an extremely small scale.
Which means it's all downhill from here until we reach heat death in several billion years where one by one all the stars explode and, eventually, go out. Home Clips DW50 Guide. Via just-make-it-a-good-one-eh. Executive Producer.
And there's a phone app that can translate text in several languages in real time , and a pair of glasses that does the same thing for Japanese writing , displaying subtitles. Share On facebook Share On facebook Share.
BBC Four. All the stars are different distances away, so we'd see them go out at really different times, probably spread over thousands of years.
Related Links. Does extra-terrestrial life exist in our galaxy?
But in the few years we've been listening out for extraterrestrial lifeforms, we haven't heard a peep. That's because light travels at a finite speed and the universe is really, really big. Show more.
Explore more science. If alien life is not close by, we might never encounter it. The bees really are disappearing. Share On whatsapp Share On whatsapp.