News from the UK today that new tokamak ST-40 has been turned on, so I thought I’d post a little explainer about how fusion works.
I wrote this as a writing test in a job interview for CSIRO. Thought it was OK – but i didn’t get the job….
Have you ever wondered what would happen if a shooting star collided with a star? Well, scientists at CSIRO think they have discovered just that! Unfortunately the collision is too far away to see, but the scientists have discovered that Star PSR J0738-4042 is bombarded – regularly!
Shooting stars are actually pieces of spacerock that burn up as they fall into our atmosphere. Spacerocks are falling into PSR J0738-4042 as a result of it exploding in the past, flinging out debris that is now falling back in on itself.
In the explosion the star became a pulsar that shoots out radio waves as it spins, at nearly three turns per second. The falling debris gets zapped by the radio waves, turning it into plasma, which then affects the star’s regular pulses. By measuring changes in the pulses the scientists calculated the mass of one of the rocks at around a billion tonnes!
It’s a peaceful starry night, but Pete Kuzma has found the remains of a grisly murder in the sky – a dismembered dwarf. galaxy.
Part of the Physics in the Pub 2016 with Australian Institute of Physics ACT branch, supported by a National Science Week seed grant.
Filming by Jon and Liam from Crus Productions.
Amazing news that gravitational waves have been detected, but they were there in you bedroom and your kitchen all along…
Why was Pluto demoted? Even after the successful flypast in 2015, he was still not reinstated. Sing along and help him get back in with the big boys.
(… just a hint… he’s got no chance)
Why is there winter and summer? Why is the earth like a toasted marshmallow?
The answer to the famous question that stumped so many Harvard graduates.
With apologies to Labi Siffre, and Madness…