space

Scent of life on Venus

Artist’s impression of Venus, with an inset showing a representation of the phosphine molecules detected in the high cloud decks.
Credit: ESO / M. Kornmesser / L. Calçada & NASA / JPL / Caltech

Microbial life may be present in the atmosphere of Venus, according to a paper published in Nature Astronomy today.

(Written by Rohan Byrne, our resident geoscientist. Follow him at @buildmeaplanet)

Traces of a telltale gas called phosphine have been detected in sunlight bouncing off the planet. The gas, a rare chemical sometimes used as a pesticide, has never before been observed on rocky planets other than Earth, where it is almost always a product of life.

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Exiled moons may explain astronomical mysteries

Australian and South American researchers posit wandering “ploonets” as unseen actors in distant solar systems.

Moons ejected from orbits around gas giant exoplanets could explain several astronomical mysteries, an international team of astronomers suggests.

Researchers led by Mario Sucerquia, from the Universidad de Antioquia, Colombia, and Jaime Alvarado-Montes from Australia’s Macquarie University, modelled the likely behaviour of giant exomoons predicted to form around massive planets – and discovered that they would be expelled and sent packing.

Roughly 50% of these ejected moons would survive both the immediate expulsion and avoid any subsequent collision with the planet or the star, ending up as quasi-planets travelling around the host star, but in eccentric “Pluto-like” orbits.

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Mission design at rocket speed

Planning space missions is traditionally a time-consuming and costly process. But the new Australian National Concurrent Design Facility (ANCDF), housed at UNSW’s Canberra campus, speeds things up so a mission can be planned in weeks rather than months.

Harnessing the expertise, design processes and software of the French Space Agency CNES (Centre National d’Etudes Spatiales), the UNSW team has created Australia’s first concurrent design facility.

The ANCDF allows engineers and scientists—both professionals and students—to design different parts of a mission in parallel rather than one after the other, which is the traditional approach. [continue reading…]

Melbourne launches a robotic mission to Mars

For the past few years Victorian students have been walking on the (facsimile) surface of Mars at the Victoria Space Science Education Centre in Strathmore. Now they will also be able to control a Mars rover and search for water—emulating the intrepid Mars rovers that have caught public imagination in recent years.

The Victorian Education Minister is launching the robotic mission at 11 am tomorrow, Thursday.
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