The whole panel joined in to tackle this listener question...
... and how do we know?
Dark matter exists all throughout the universe...right?
The quantum world is strange, so what are entangled particles?
Does light have a mass?
They're the stuff of sci-fi, but how do lasers actually work?
Things get very strange indeed inside a black hole, but what would Earth look like?
Should we be worried about an asteroid apocalypse?
Gravity shields - sci fi or sci fact?
Anthony wants to know if launching a rocket from a tube would make it travel faster.
Is Venus the only one...?
How big can star systems get?
It because of the Earth's spin? Or maybe the wind?
Would a car protect you from a lightning strike, and what would happen if you were driving?
In the 1940s, there was a chicken that survived 18 months without a head. How long could a human survive without a head?
What's the difference between evaporation and boiling?
How do we find water sources hidden deep underground?
Could hyperloops make commuting a thing of the past?
Is it possible to create noise-cancelling headphones, but for an apartment?
What’s the smallest particle we can detect, and how small is it?
When on the moon, astronauts have many things to contend with, not least temperature and space debris.
How do waterproof coats work? And how does that differ from water resistance?