Riding the gravitational wave
University of Melbourne researchers are part of an international team to 'hear' Albert Einstein's gravitational waves for the third time - but what are they?
Revealed: The billion-year soundbite
Einstein was right. The discovery of gravitational waves proves the universe is talking to us - and listening to it will take us places we've never been before.
What’s the heaviest thing in the universe?
If you have always thought it's lead you're wrong - and you will be surprised how such a small quantity of this stuff can weigh so much.