Water on Mars
I enjoyed Professor Brian Cox's new BBC series 'The Planets' which explains the origins of our solar system.
The last programme explained that Mars used to be just like its sister planet Earth and that this 'fourth rock from the Sun' had the ability to hold large quantities of water.
So here's a no expenses spared Twitter demonstration to explain how water came to be on Mars.
— Physics & Astronomy Zone (@ZonePhysics) June 5, 2019