Cosmic Vertigo

The hottest thing in the Universe isn't the core of a planet, or the centre of an exploding star. It's created here on Earth by scientists working at the Large Hadron Collider.

Could there be a time when we look up at the night sky and see more objects, planets and stars, than dark space? Join Alan and Amanda as they tackle another of your Cosmic Queries.

Stargazing Live on ABC TV gathered astronomers and astrophysicists for three nights of discoveries and record-breaking observation.

Join Alan as he explores the Siding Spring Observatory, where Amanda worked, and asks these professional stargazers (plus one red-haired comedian) what makes them feel Cosmic Vertigo.

Featuring Karlie Noon, Fred Watson, Becky Smethurst, Greg Quicke, Andrea Boyd, Amalia Sicardi, Tim Minchin and Kumi Taguchi.

We’re told space is a vast empty vacuum. But how empty can it be, if we know it’s full of stars and black holes, nebulas and galaxies?

Alan and Amanda hop aboard a space elevator and rise through the Earth's atmospheric layers to explore our not-so-empty Universe.

Imagine the mass of the sun crushed into something the size of the earth – what you're picturing is a white dwarf. But things can get much more dense than that.

Amanda and Alan deliver a lesson in density with a side of salt and aioli (BYO chips).

In Season one, Amanda and Alan took an inventory of what we've left on the Moon: golf balls, a couple of flags, 96 bags of human waste ... But Ashton, a listener, wonders whether any robots (or humans) are up there.

Zooming right in from the decommissioned dwarf planet Pluto to the humble yet powerful atom helium, Amanda and Alan measure up the smallest things in the Universe — with the aid of a strand of your hair.