When E.T phoned home and "Big Ear" picked up the signal

The radio telescope known as Big Ear picked up a signal seemingly from outer space – just once – and now it's been dismantled and turned into a golf course.

Volcanoes on the moon could have been erupting in the time of the dinosaurs

This feature on the lunar surface, called Maskelyne, is one of many newly-discovered young volcanic deposits on the moon.

Amina Khan   Scientists thought the moon had been cold and dead for a billion years, but a new discovery could force them to reconsider its evolution.


Super-pressure balloons reach for stars

Weather observer: Michael Glasson releases a weather balloon at Giles weather station in Western Australia to track wind speed and direction.The data will help predict rain in Sydney .

Robert Brand   Thin air no barrier to high-spec weather balloons.

Total lunar eclipse: what you need to know

Caroline Zielinski   Total lunar eclipse question and answer.

Rare 'blood moon' on the rise over WA skies

The rare 'blood moon' is expected occur from around 6.20pm (WA time) on Wednesday.

Candice Barnes   What do you get when you combine one of Perth’s spectacular sunsets with a total lunar eclipse? According to astronomers, it’ll be an awe-inspiring skyshow, known as a "blood moon".

'Blood moon' eclipse predicted

Lunar eclipse.

Lisa Visentin   The moon is expected to be bathed in a bright orange-red glow on Wednesday when the second total lunar eclipse of the year occurs - and Sydneysiders should have prime-time viewing.


Get ready for a total lunar eclipse

The magnificent changing moon during a total eclipse.

Tanya Hill   Look up towards the east on Wednesday night (October 8) and a total lunar eclipse will be visible from across Australia.

Martians wave as comet flies by

Rob McNaught.

Perry Vlahos   The celestial visitor was discovered using the telescopes at Siding Spring in western NSW.

Is Pluto a planet again?

This photo taken by the Hubble Space telescope and released by NASA shows the planet Pluto, centre, with its moons.

Eryk Bagshaw   Pluto can thank its lucky stars its got a strong fan base in the Milky Way. 

NASA spacecraft slips into orbit around Mars

An artist's concept provided by NASA of the MAVEN spacecraft as it approaches Mars.

A NASA robotic spacecraft has fired its braking rockets, ending a 10-month journey to put itself into orbit around Mars and begin a hunt for the planet's lost water and dramatic changes to its atmosphere.

October lunar eclipse shows solar system in action

Coming up: The October eclipse is the second in a sequence of four total lunar eclipses that began in April, shown here.

Perry Vlahos   For those who missed it in October, here's another opportunity to watch the moon dive through the Earth's shadow.

Boeing, SpaceX to take Americans to space

Artist's impression of Boeing crew transport capsule docking with the International Space Station.

Kenneth Chang   Boeing and the Space Exploration Technologies are the winners in the competition to carry American astronauts to the International Space Station, ending NASA's reliance on Russia.

Fixing climate change may add no costs, report says

JUSTIN GILLIS   In decades of public debate about global warming, one assumption has been accepted by virtually all factions: that tackling it would necessarily be costly. But a new report casts doubt on that idea, declaring that the necessary fixes could wind up being effectively free.

Find and see elusive Mercury

How-to: Mercury will be joined by Spica in the southern sky on September 19.

Perry Vlahos   Close to the spring equinox in September is a good time for evening viewing of Mercury.

Canopus the star of the show

Get down: Canopus, the second-brightest star in the sky, is heading directly to the horizon in Melbourne.

Perry Vlahos   An unusual alignment between Melbourne and the star Canopus, the second brightest star in the sky, is happening now.

Bill Bradfield, world-class comet hunter

Eye in the sky: Astronomer Bill Bradfield in 2004 with his homemade telescope.

Perry Vlahos   With modest, homemade gear, the renowned star gazer had an astounding record in finding shooting stars.

NASA scientist says Australian science cuts 'embarrassing'

Abigail Allwood with daughter Sophia at home.

Tony Moore   The Brisbane astrobiologist now leading NASA’s search for life on Mars says recent Australian science funding cutbacks were “tragic and embarrassing”.

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Rain of asteroids melted early Earth, boiled its oceans

The lunar surface.

Julia Rosen   When you look up at the moon's pock-marked face, you're actually staring at Earth's early history. Scientists have found that much of our planet's surface probably melted repeatedly following large collisions during the 'Hadean era'.

Kryptonite for the super moon

AN EXAGGERATION: Describing it as a ‘‘super’’, leaping over tall buildings moon? I think not.

Perry Vlahos   The next full moon, on August 11, should be an ‘‘ultra super premium moon’’ because it will be 1362 kilometres closer than July’s.


Buzz Aldrin saw 'unidentified' object during 1969 Apollo 11 flight

Buzz Aldrin says humans who go to the moon should plan on staying there.

David Milward   Second man to walk on moon convinced life exists elsewhere in space but denies his sighting was extraterrestrial.