Full paper available here, read on for media release, photos, captions and background information.

Modelling shows big galaxies get bigger by merging with smaller ones

Galaxies grow large by eating their smaller neighbours, new research reveals.

Exactly how massive galaxies attain their size is poorly understood, not least because they swell over billions of years. But now a combination of observation and modelling from researchers led by Dr Anshu Gupta from Australia’s ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) has provided a vital clue.

Full paper available here, read on for media release, photos, captions and background information.

Two square metres of solar window will do the same job as a standard rooftop solar panel, Australian researchers say.

Semi-transparent solar cells that can be incorporated into window glass are a “game-changer” that could transform architecture, urban planning and electricity generation, Australian scientists say in a paper in Nano Energy.

The researchers – led by Professor Jacek Jasieniak from the ARC Centre of Excellence in Exciton Science (Exciton Science) and Monash University – have succeeded in producing next-gen perovskite solar cells that generate electricity while allowing light to pass through. They are now investigating how the new technology could be built into commercial products with Viridian Glass, Australia’s largest glass manufacturer.

A proof-of-concept published in Nature promises warmer, cheaper and more robust quantum computing. And it can be manufactured using conventional silicon chip foundries.

Full media kit here.

Most quantum computers being developed around the world will only work at fractions of a degree above absolute zero. That requires multi-million-dollar refrigeration and as soon as you plug them into conventional electronic circuits they’ll instantly overheat.

But now researchers led by Professor Andrew Dzurak at UNSW Sydney have addressed this problem.

Remotely operated vehicles used by the oil and gas sector can be enhanced to gather more scientific data, researchers say.

Underwater robots are regularly used by the oil and gas industry to inspect and maintain offshore structures. The same machines could be adapted to gather extra scientific information, thus boosting environmental and resource management capabilities, an Australian-led study has revealed.

Scientists from around the globe, led by Dianne McLean and Miles Parsons from the Australian Institute of Marine Science (AIMS), are urging closer ties between industry and researchers to maximise the use of the underwater robots, known as remotely operated vehicles (ROVs).

In a paper published in the journal Frontiers in Marine Science, they identify a range of instruments that can be easily added to the craft, including cameras, audio recorders and sample collectors.

Full paper available here, read on for media release, photos, captions and background information.

Researchers find a simple way to detect tiny imperfections that affect performance. 

A literal “trick of the light” can detect imperfections in next-gen solar cells, boosting their efficiency to match that of existing silicon-based versions, researchers have found. 

The discovery opens a pathway to improved quality control for commercial production.

On small scales, perovskite solar cells – which promise cheap and abundant solar energy generation – are already almost as efficient as silicon ones. 

However, as scale increases the perovskite cells perform less well, because of nanoscale surface imperfections resulting from the way they are made.

As the number of unwanted tiny lumps and bumps grows, the amount of solar power generated per square centimetre drops off. 

Now, however, Australian researchers have come up with a solution – using a camera. 

Scarring and major lacerations due to vessel collisions becoming more common, study finds.

Almost one-fifth of the whale sharks (Rhincodon typus) in Western Australia’s Ningaloo Reef Marine Park show major scarring or fin amputations, with the number of injured animals increasing in recent years, new research reveals.

Distinctive scar patterns strongly suggest many of the injuries are caused by boat collisions, says whale shark scientist Emily Lester from the Australian Institute of Marine Science (AIMS).

Lisa Kewley has transformed our understanding of the early years of the Universe, the development of galaxies, and what happens when they collide.  

For her pioneering investigations across theory, modelling and observation, she will receive the US National Academy of Science’s biennial James Craig Watson Medal in Washington DC.

“At school I thought physics would be too hard.  But I had a wonderful physics teacher whose love for astronomy was contagious!” says Lisa.

Highlights from day five of National Science Week – hump day brings comedy, dance and memories of the flu.

423 events and exhibitions, 18 online activities, and dozens of great stories and talent.

Adam Spencer, Karl Kruszelnicki and many distinguished scientists feature in events around the country today – bringing tales of music, maths, Indigenous history and the untold stories behind the invention of the World Wide Web.

National

• In class online with Karl Kruszelnicki.

Sydney

• Indigenous science sessions at Redfern begin.
• Pandemic in Parramatta:when the Spanish flu hit town.
• Reclaiming the contribution of women to the creation of the Internet.
• Periodic Table fun with Adam Spencer, Karl Kruszelnicki and Alice Motion.

Cairns

• Rapid-fire science education: 20 slides shown for 20 seconds each in a PechaKucha Night.

Adelaide

• Meet the local dolphins.

Tasmania

• High-voltage art made by electrifying matter.
• The science and comedy of your poor decisions, with Alanta Colley & Ben McKenzie.

Melbourne

• TheIndigenous stories, memories, and roadmaps of the night skies.

Read on for more on these, including event contact details.

Also today:

• Hobart: Chemistry in dance: three elements, three choreographers, three composers and 18 performers.
• Sydney: The ambidextrous brain: the neuroscience of imagination and creativity.
• Sydney: Hear why music is maths at the City Recital Hall.
• Moonyanooka, WA: Tour the Geraldton Bureau of Meteorology weather station.
• Perth: Women in STEM Breakfast with award-winning radio astronomer Dr Natasha Hurley-Walker.

Scientists urge priority action on hundreds of surviving reefs.

The majority of 2500 reefs surveyed in a major international exercise retain the coral species that give them their distinctive structure.

More than 80 marine scientists, including several from Australia, contributed to the study, which is published in the journal, Nature Ecology and Evolution.