During the early hours of this morning (3:42am AEST) our sun released a strong solar flare. It follows right on the heels of a more moderate flare that was released from the same region of the sun on Tuesday…
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Articles on Sun
Displaying 141 - 155 of 155 articles
What makes our sun shine has been a mystery for most of human history. Given our sun is a star and stars are suns, explaining the source of the sun’s energy would help us understand why stars shine. An…
Space weather impacts many modern-day technologies. But one of the most concerning – and least reported – space weather effects is the increased radiation exposure to passengers on commercial long-distance…
Over the past few months night sky watchers in the southern parts of Australia have been presented with lots of beautiful displays of the Aurora Australis or Southern Lights. So what causes the impressive…
The sun is our nearest star and the source of all our light and heat on Earth but recent reports have highlighted an ongoing steep decline in solar activity. This story is a reminder that our sun is a…
If your blood test results suggest you’re low on vitamin D, you’re not alone – nearly one-third of the Australian population isn’t getting enough of the sunshine vitamin. But this doesn’t necessarily mean…
If there is one thing we know about comets, it is that their behaviour is really hard to predict and that they will always surprise us – and sometimes disappoint. Unfortunately it looks like comet ISON…
The amount of solar radiation passing through Earth’s atmosphere and reaching the ground globally peaked in the 1930s, substantially decreased from the 1940s to the 1970s, and changed little after that…
You may have read the sun’s magnetic field is heading for a change in field polarity - meaning it will flip upside down - and could have ripple effects throughout the entire solar system. So what does…
It was written in the stars all along, but we’ve just found out: a whopping 70% of stars in a widely-studied cluster die before reaching old age which, for stars, is the most productive stage of their…
Last week, blogger Alec Rawls leaked a working draft of the 5th Assessment Report by the Intergovernmental Panel on Climate Change (IPCC). One section of the IPCC report examines the role of the sun on…
A study published in the journal Nature Geoscience last week suggests water on the moon may have come, at least in part, from the sun. Until a few years ago the orthodox view was that the moon was bone-dry…
The biggest space storm in five years is hurtling towards Earth at more than 2000 km per second. Two bursts of solar wind and plasma - known as coronal mass ejections (CME) - are expected to hit Earth…
Nearly one third of Australian adults are suffering vitamin D deficiency, according to a study involving more than 11,000…
Red giants, stars nearing the end of their life cycle, have offered insight into the future of our sun 5 billion years from…
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Senior Curator (Astronomy), Museums Victoria and Honorary Fellow at University of Melbourne, Museums Victoria Research Institute
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Professor of Physics, UCL
