Answers to questions about space science, astronomy, rockets, planets, galaxies, stars...
How do astronauts cook in space?
Isn't it just a giant vacuum? Over to physicist Adam Murphy...
To quote Hitchhiker's Guide to the Galaxy... "Space is vastly, hugely, mind bogglingly big!"
How does universe expansion work?
How do muscles cope without gravity?
Could there be a hidden planet?
When are people actually going to get to Mars, if ever?
Can gravity have a speed?
Can animals actually conceive in space?
What is dark matter?
Can astronauts get on the internet?
What does 2019 hold for science?
What does an air bubble in a blob of water do if you take away the gravity?
What, or when, would aliens see, if they looked at the earth?
Is everything spinning in the universe?
What does a gravitational wave feel like?
Could a black hole be a wormhole?
What would life be like without our planet's tilt?
How much of our planet's ocean have we mapped?
It was over to planetary geologist David Rothery
And how are planets born in the first place?
Chris Smith put this question to planetary geologist David Rothery
Will lunar living be in the near future?
And how do they form?