Answers to Physics Questions

Physics, cosmology, astrophysics, electricity, energy, forces, gravity, light and maths...

08 January 2019

How does universe expansion work?

08 January 2019

Could there be a hidden planet?

08 January 2019

Can gravity have a speed?

08 January 2019

What is dark matter?

17 December 2018

What does an air bubble in a blob of water do if you take away the gravity?

04 December 2018

What, or when, would aliens see, if they looked at the earth?

04 December 2018

Is everything spinning in the universe?

04 December 2018

What does a gravitational wave feel like?

04 December 2018

Could a black hole be a wormhole?

09 October 2018

It was over to planetary geologist David Rothery

09 October 2018

And how to plasma balls work?

09 October 2018

Chris Smith put this to physicist Jess Wade

02 October 2018

Why does wearing wellies result in feeling pressure in a puddle, when going barefoot doesn't?

11 September 2018

The whole panel joined in to tackle this listener question...

11 September 2018

And how do they form?

11 September 2018

Why is there so much distance between them?

26 June 2018

Is it possible to weigh things in space?

12 June 2018

Dark matter exists all throughout the universe...right?

12 June 2018

The quantum world is strange, so what are entangled particles?

12 June 2018

Does light have a mass?

12 June 2018

They're the stuff of sci-fi, but how do lasers actually work?