It’s 50 years since the two Apollo 11 astronauts – Neil Armstrong and Buzz Aldrin – spent 22 hours collecting samples, deploying experiments and sometimes just playing in the Sea of Tranquillity on the...

Water prices in the southern Murray-Darling Basin have reached their highest levels since the worst of the Millennium drought more than a decade ago. These high water prices are causing much anxiety in the region, and have led the federal government to call on the Australian Competition and Consumer Commission to hold an inquiry into the water...

Even though we can see the Moon shining brightly in the night sky – and sometimes in daylight – it’s hard to put into perspective just how large, and just how distant, our nearest neighbour actually is.

So just how big is the Moon?