Mark Cheung
@markcheung
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Father+Helio/astrophysicist: 🌞🌏✨ space weather, magnetic fields in the universe. Aussie; ex NASA SDO now CSIRO; OMO
Earth
Joined February 2009
This is a fantastic review. We are entering an era of discovering rare cosmic phenomena. https://t.co/9h7hXkPyxe
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Today, we’re showing off our favorite pictures of culpeo foxes we’ve spotted around Cerro Pachón, home of NSF–DOE Rubin Observatory. 🦊 📸 💡Fun fact: While these little guys look like foxes (and are called foxes), they’re actually more closely related to wolves and jackals!
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🚀We’re looking for 2026 interns at @PolymathicAI (NYC)! Want to work on scientific foundation models + ML for physics, biology, astronomy, & more? Want to contribute to frontier research with a brilliant, fun, and friendly team? Please sign up on our interest form 👉
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SPICE -- modelling synthetic spectra of stars with non-homogeneous surfaces.
arxiv.org
In the era of large time-domain spectro-photometric surveys, surface variations such as starspots, chemical inhomogeneities, pulsations, rotational distortions, and binary interactions can now be...
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Susumu Kitagawa, Richard Robson and Omar M. Yaghi have been awarded the 2025 #NobelPrize in Chemistry for the development of a new type of molecular architecture. In 1989, chemistry laureate Richard Robson tested utilising the inherent properties of atoms in a new way. He
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Thanks to everyone who came to our Australia Telescope Users Committee open meeting today!
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Registrations are now open for our next Australia Telescope User Committee meeting (ATUC). ATUC is a chance to discuss issues that impact users of the ATNF. 16 September, online and in-person in Sydney. Register:
forms.office.com
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⚠️ Tsunami Warning: Japan’s East Coast A powerful magnitude 8.7 earthquake struck off the Russian coast, north of Hokkaido, this morning. Tsunami waves are now moving south across the Pacific and may impact Japan’s eastern coastline. If you’re in the affected regions, stay away
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BREAKING: The state of Hawaii is now under a Tsunami Warning. Here's the latest:
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TSUNAMI WARNING 3: See https://t.co/npoUHxWBas for alert areas. M8.7 080mi SE Petropavlovsk, Kamchatka 1625PDT Jul 29:
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Air travel fuels ~$400B of U.S. GDP, but space weather like solar flares & winds can disrupt navigation, comms, & passenger safety. @NWSSWPC tracks the Sun’s activity and provides warnings and predictions in real-time, helping the United States’ 700,000 pilots make the most
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The Academy’s new 10-year plan for astronomy is being launched today in Adelaide at the annual meeting of Australia’s astronomers. Read more: https://t.co/HUGz9Vgn86
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The @AstroSocAus honours six astronomers at its Annual Scientific Meeting in Adelaide this week, including our Dr Joshua Preston Pritchard - winner of the Emerging Leaders in Astronomy Software Development Prize. Read about all the winners:
scienceinpublic.com.au
National recognition for astronomers from Sydney, Canberra, Melbourne and Perth. Galactic winds stopped big galaxies from growing, Dr Rebecca Davies, Swinburne University How the Milky Way and its...
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Can AI help solve Millennium Math problem in Fluid dynamics? We take an important step in this direction in our recent paper with physics-informed learning: High-Precision PINNs in Unbounded Domains: Application to Singularity Formulation in PDEs We develop a modular and a
arxiv.org
We investigate the high-precision training of Physics-Informed Neural Networks (PINNs) in unbounded domains, with a special focus on applications to singularity formulation in PDEs. We propose a...
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"Training deep learning models on petabyte-scale Earth observation (EO) data requires separating compute resources from data storage. However, standard PyTorch data loaders cannot keep modern GPUs utilized when streaming GeoTIFF files directly from cloud storage. In this work, we
github.com
A toolkit for optimizing cloud GeoTIFF streaming in PyTorch. Achieves 20x throughput and 90% GPU utilization through optimized data loading and compression. Paper: https://arxiv.org/pdf/2506.06235 ...
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One of the first radio astronomers, Ruby Payne-Scott, was recently recognised with a ferry named in her honour! Read more about Ruby and how she made waves at CSIRO: https://t.co/QMrFS5Wa0M
csiro.au
Australia is one of the leading countries for radio astronomy, which is largely thanks to one of the first radio astronomers in the world, Ruby Payne-Scott.
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Who knew dust could be so pretty! 😍 New images from NASA’s recently launched PUNCH (Polarimeter to Unify the Corona and Heliosphere) mission show the beauty of zodiacal light, the faint glow of sunlight reflecting off dust surrounding our Sun. At left, a combined image from
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How do wildlife respond to eclipses? @DoNASAScience and the Eclipse Soundscapes project now have some answers! They’ll be sharing their findings in a free webinar tomorrow, May 7, at 2pm ET. Register here: https://t.co/ChNRK2cSaK During the April 8, 2024, total solar
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🧵1/3 A new space telescope opens its eyes 👀 Launched on March 11, NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) mission has opened its instrument doors to capture “first light,” the mission’s first images of the Sun’s outer atmosphere and surrounding space.
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