There's a big gap between Mars and Jupiter: but why?...
It was over to planetary geologist David Rothery
And how are planets born in the first place?
Does the size of a planet determine the size of the life forms that live there?
And why all the confusion with Pluto?
Is it gas the whole way through?
Sunsets on the red planet aren't what you'd expect...
Should we be worried about an asteroid apocalypse?
Is Venus the only one...?
Any why do we have two tides a day?
Would Saturn's moon make a nice holiday home?
There's a big gap between Mars and Jupiter: but why?
I know there have been many missions to the moon and it's incredible to think humans have walked on its surface!...
How does Jupiter's moon Io get the energy needed to heat it up?
Why do new planets have such terrible names?
...and where does the sky end?
Could a jaunt to Jupiter be the physics-version of anti-wrinkle cream?