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?
Is it technically possible for two planets to share the same orbit, as in
exact polar opposites to each other...
Where are we within the universe? Joanna Kerr asks
astrophysicist Dr Sean McGee from the University of