Guidance and navigation engineer, Richard Lancaster, explains how the ‘Mars Yard’, at Airbus Defence and Space, Stevenage, allows engineers to test out the capabilities of the ExoMars rover.  He talks about the need to transmit all commands and receive data through a spacecraft orbiting Mars.  Spacecraft engineer,...

This animated video describes how Einstein’s field equations led to the cosmological constant, which was later shown to be incorrect.  However, Friedmann and Lemaitre found solutions to Einstein’s equations, if the universe was still expanding.  Hubble found evidence from the red-shift of galaxies that the universe...

In this practical investigation, students will perform a combustion reaction using a mixture of alcohol and air in a plastic water...