A slightly exaggerated impression of the real shape of our warped and twisted Milky Way. Image: Xiaodian Chen (National Astronomical Observatories, Chinese Academy of Sciences)
The first accurate 3D map of our galaxy reveals its true shape: warped and twisted.
Astronomers from Macquarie University and the Chinese Academy of Sciences have used 1339 ‘standard’ stars to map the real shape of our home galaxy in a paper published in Nature Astronomy today.
They found the Milky Way’s disc of stars becomes increasingly ‘warped’ and twisted the further away the stars are from the galaxy’s centre.
Female scientists have played a critical role in many scientific discoveries throughout history, but their contributions have often been overlooked.
Ahead of International Women’s Day this Thursday, Macquarie University scientists are celebrating the work of forgotten women of science through history; explaining how their work today is changing the world; and making the case for why women in earth and environmental sciences need to stand together.
Lesley Hughes researches the impacts of climate change on species and ecosystems. Now she’s celebrating the work of Beatrix Potter and other pioneering but forgotten women of science, through the exhibition Hidden Figures of STEMM.
Evolutionary biologist Jemma Geoghegan is using whales and fish to better understand how new viruses emerge.
Kira Westaway uses glowing grains of sand to travel back in time. Her work has transformed our understanding of human evolution.
Volcanologist Heather Handley’s research into volcanoes in the Pacific ‘Ring of Fire’ is improving our understanding of volcanic hazards. She’s also the co-founder and chair of new network Women in Earth and Environmental Sciences Australasia (WOMESSA).
Wastewater, tourism, and trade are moving microbes around the globe at an unprecedented scale. As we travel the world we leave billions of bacteria at every stop.
As with rats, foxes, tigers and pandas, some microbes are winners, spreading around the world into new ecological niches we’ve created. Others are losing, and might face extinction. These changes are invisible, so why should we care?
“Yes, our survival may depend on these microbial winner and losers,” say a team of Australian, Chinese, French, British and Spanish researchers in a paper published in Science today.
“The oxygen we breathe is largely made by photosynthetic bacteria in the oceans (and not by rainforests, as is commonly believed),” says Macquarie University biologist Michael Gillings.
And feature story by lead author Ian Wright for The Conversation here.
A global team of researchers have cracked the mystery of leaf size. Their research was published today as a cover story in Science.
Why is a banana leaf a million times bigger than a common heather leaf? Why are leaves generally much larger in tropical jungles than in temperate forests and deserts? The textbooks say it’s a balance between water availability and overheating.
But it’s not that simple.
The research, led by Associate Professor Ian Wright from Macquarie University, reveals that in much of the world the key limiting factor for leaf size is night temperature and the risk of frost damage to leaves. [continue reading…]
Caring for Country in Arnhem Land
Macquarie University Eureka Prize winners
Macquarie University congratulates its winners in the 2017 Australian Museum Eureka Prizes and the winner of the Macquarie University Eureka Prize for Outstanding Early Career Researcher.
High-power diamond lasers invented at Macquarie University
High-power lasers have many potential applications: from medical imaging to manufacturing, shooting down drones or space junk, or powering deep space probes. But current laser technologies overheat at high power.
Rich Mildren and his team have developed a technique to make diamond lasers that, in theory, have extraordinary power range. Five years ago, their lasers were just a few watts in power. Now they’ve reached 400 watts, close to the limit for comparable conventional lasers.
Rich Mildren won the Defence Science and Technology Eureka Prize for Outstanding Science in Safeguarding Australia.
High-power diamond lasers, invented at Macquarie University, Eureka finalist
High-power lasers have many potential applications: from medical imaging to manufacturing, shooting down drones or space junk, or powering deep space probes. But current laser technologies overheat at high power.
Rich Mildren and his team have developed a technique to make diamond lasers that, in theory, have extraordinary power range. Five years ago, their lasers were just a few watts in power. Now they’ve reached 400 watts, close to the limit for comparable conventional lasers.
Their calculations suggest that their diamond laser technology could handle over a thousand times the current power. They’ve also shown that they can use diamond to focus multiple laser beams into a single beam. And they can create almost any frequency of light.
Diamond is an outstanding optical material and exceptionally good at dissipating heat. But it’s not very good at generating a laser beam as its dense structure makes it difficult to introduce the impurity additives normally needed to amplify light. Until now.
A unique collaboration between scientists and Aboriginal people in remote south-eastern Arnhem Land is building knowledge about country and how local people can better manage it.
In the last nine years the Ngukurr Wi Stadi bla Kantri (We Study the Country) Research Team has discovered species new to science, found new populations of threatened species, preserved culturally-significant wetlands, and documented the community’s plants and animals in eight local languages.
Led by ecologist Dr Emilie Ens from Macquarie University and Ngandi Elder Cherry Wulumirr Daniels, this citizen science research is also working with the Yugul Mangi Rangers to better manage the new threats facing their country—like feral animals, weeds, climate change and altered fire regimes.
The project is blending ecological methods with traditional knowledge and ways of seeing country. “Our ancestors were rangers. We were rangers for 40,000 years and are rangers today,” Cherry says. “It’s a responsibility for us to look after those things.”
“We are not doing it for ourselves. We are doing this for our country and for our people and for the sake of our culture, keeping our culture alive and strong.”
What fly guts could reveal about our health: microbes in the gut can influence diet and reproduction, and the changes could be passed on to the next generation.
Discoveries from Macquarie University and Sydney University illustrate how microbes in the gut can influence host animals. The work could be important for understanding the effects of the gut microbiota on physiology and cognitive function in humans in the future. More below.
Australian and Vietnamese medical researchers are meeting in Sydney this week to plan their next move against tuberculosis (TB), a disease that once was Australia’s top killer and still kills 54,000 people each year in Vietnam.
The researchers are coming together in Australia to share their progress and build stronger ties in fighting a disease which threatens Australia through its presence in neighbouring countries.
Centenary Institute’s Prof Chris Semsarian available for comment on sudden cardiac death in young athletes.
Two fit, young professional footballers – apparently completely healthy – have suffered sudden heart attacks mid-match in recent weeks. [continue reading…]
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Media and communication training
Full day hands-on workshops in small groups. Practise interviews with journalists. Find your key messages. Handle tricky questions. Learn how to ensure your research is reported accurately.
Sarah's structure of the course, specific insight and understanding of science, her contacts and common mistakes made in communication were great and furthered my skills in this area.
Anonymous - Sydney Jan 2020
Science In Public
2020-01-28T15:04:28+11:00
Anonymous - Sydney Jan 2020
Sarah's structure of the course, specific insight and understanding of science, her contacts and common mistakes made in communication were great and furthered my skills in this area.
This is one of the best science communication courses I have ever encountered. It teaches all research to think out of box and really simplify their research in lay man's language. I will highly recommend this to anyone looking to learn more about science communication.
Shwathy Ramesh
Science In Public
2020-02-24T09:29:55+11:00
Shwathy Ramesh
This is one of the best science communication courses I have ever encountered. It teaches all research to think out of box and really simplify their research in lay man's language. I will highly recommend this to anyone looking to learn more about science communication.
Sufficient time given to work one-on-one with each participant. TV, radio and newspaper given sufficient weight. Practical, informative and professional
Anonymous - Gold Coast May 2021
Science In Public
2022-09-05T12:59:42+10:00
Anonymous - Gold Coast May 2021
Sufficient time given to work one-on-one with each participant. TV, radio and newspaper given sufficient weight. Practical, informative and professional
Good mix in terms of topics covered, people invited and media coverage. This course will make me more comfortable and I believe it will improve my confidence about myself and how I talk about my work in front of media.
FEnEX CRC, December 2021
Science In Public
2022-09-05T13:01:49+10:00
FEnEX CRC, December 2021
Good mix in terms of topics covered, people invited and media coverage. This course will make me more comfortable and I believe it will improve my confidence about myself and how I talk about my work in front of media.
Sarah is an amazing instructor. She has looked after each of the participants very well. I really like her style. Thank you to all team for a valuable training session.
Seyhan Yazar, Garvan Institute of Medical Reseearch
Science In Public
2022-09-05T13:02:58+10:00
Seyhan Yazar, Garvan Institute of Medical Reseearch
Sarah is an amazing instructor. She has looked after each of the participants very well. I really like her style. Thank you to all team for a valuable training session.
Pushed me to finesse/develop a pitch, find an edge that will facilitate communicating my research findings. The real world experience/opportunity for interviews was exceptionally helpful
Megan Bater
Science In Public
2022-09-05T13:06:38+10:00
Megan Bater
Pushed me to finesse/develop a pitch, find an edge that will facilitate communicating my research findings. The real world experience/opportunity for interviews was exceptionally helpful
The day was a great balance of topics and presented in an approachable and friendly style that was very inclusive. It was a fantastic and informative session that will really help me day-to-day in the communications work I do.
Ben Westmoreland, 2022
Science In Public
2022-09-05T13:07:28+10:00
Ben Westmoreland, 2022
The day was a great balance of topics and presented in an approachable and friendly style that was very inclusive. It was a fantastic and informative session that will really help me day-to-day in the communications work I do.