In 1924, the Commonwealth Solar Observatory was established, which turned into the Commonwealth Observatory and then Mount Stromlo Observatory. From the first atlas of the Sun, to optical munitions, observations of Sputnik, measuring the size of the Universe, as well as finding lots of surprises along the way, Mount Stromlo has been at the forefront of astronomical discoveries.

Join Mount Stromlo astronomer and Nobel Laureate in Physics Prof Brian Schmidt in conversation with ABC's Annabel Crabb on a journey through 100 years of Mount Stromlo Observatory.

What is the dark energy that’s accelerating the Universe? Discovered a quarter of a century ago, it’s a feature of our Universe that appears to have some sort of anti-gravity property. Now astronomers have zeroed in on how it’s changed over the last 10 billion years. Using thousands of supernovae and millions of galaxies they’ve mapped the cosmos and discovered to their surprise that dark energy may be changing with time. This talk will describe the many varied ways in which astronomers are measuring the dark side of the Universe, and get you up to date on the recent exciting results.

In 1924, the Commonwealth Solar Observatory was established on Mount Stromlo. Today, Mount Stromlo Observatory is the headquarters of the ANU Research School of Astronomy and Astrophysics, and for 100 years, has been a world-renowned community of researchers exploring the heavens.

Telescopes: 100 years of evolving technology and advancing discovery with Prof Matthew Colless

Revealing the Invisible Universe with the Square Kilometre Array with Prof Naomi McClure-Griffiths