Rachel Feltman Some 12.8 billion light years away, astronomers have spotted an object of almost impossible brightness - the most luminous object ever seen in such ancient space.
Clare Sibthorpe Humans could be walking on Mars in less than two decades and the giant leap for mankind may be captured first by Canberra's new $55 million space dish unveiled by NASA on Wednesday.
Perry Vlahos Jupiter is now at its brightest, outshining all in the night sky apart from Venus and the moon.
Clare Colley The men behind the European Space Agency's Rosetta mission were part of a generation inspired by the moon landing.
Aleisha Orr The distance between Mars and the West Australian city of Perth is slightly closer for one man after being announced as one of the final 100 applicants for a one way mission to the red planet.
Perry Vlahos Over the next couple of weeks, Mars will drop in on Venus from above, little by little, getting closest on the nights of February 21 and 22.
Perry Vlahos Although no serious research takes place at Sydney Observatory now, it plays an important role in astronomical education.
Sarah Knapton When Clyde Tombaugh discovered Pluto in 1930 he could never have imagined that the icy world would one day be his final resting place.
Martin Rees Our galaxy probably harbours many billions of planets. The most fascinating question of all is how many might harbour life - even intelligent life? Could Kepler 438b be part of the answer?
Megan Levy and Marissa Calligeros The year's strongest meteor shower streaked across the skies on Sunday night - not that Sydneysiders
Anna Whitelaw Melburnians will get a second chance to see the Geminids meteor shower after Saturday night's spectacle proved to be a fizzer.
Sky-watchers will be burning the midnight oil as one of the year's most spectacular meteor showers reaches its fiery peak.
Clare Colley Wi-Fi, advanced medical imaging and algorithms to detect skin cancer all have one thing in common - they were all offshoots of astronomy, CSIRO astronomer Dr Lisa Harvey-Smith says.
Perry Vlahos The Geminid meteor shower can produce as many as 30 to 40 meteors an hour during peak activity over Australia. This year’s peak is overnight on December 13-14.
Rachel Feltman Throughout human history, comets have been distant, mysterious heavenly bodies. The hunks of rock and ice streak through the sky, streaming bright tails of gas as the sun warms them.
Perry Vlahos For most of human history we knew of only one moon, but in one fell swoop Galileo turned his telescope to Jupiter and quadrupled the number of moons in the Solar System.