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Analysis and Comment (7)

What’s going on up there? What’s going on up there? VinothChandar

Why is the sun going quiet?

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 levels are a little low, ten minutes of mid-morning or mid-afternoon sunshine could get you back to normal. If your levels are a little low, ten minutes of mid-morning or mid-afternoon sunshine could get you back to normal. Image from shutterstock.com

My vitamin D levels are low, should I take a supplement?

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…
The ‘Comet of the Century’ had a violent encounter with the sun. The ‘Comet of the Century’ had a violent encounter with the sun. NASA/Goddard/SOHO

Comet ISON fizzles … but there’s a sting in the tail

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…
How will Earth weather solar storms while the sun flips its magnetic field? How will Earth weather solar storms while the sun flips its magnetic field? NASA Goddard Photo and Video

A solar magnetic reversal means there’s no need to flip out – yet

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…
A new study shows only 30% of stars in a globular cluster will reach old age and become planetary nebulae. A new study shows only 30% of stars in a globular cluster will reach old age and become planetary nebulae. NASA

A stellar mid-life crisis: why do some cluster stars die early?

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…
The sun’s influence on climate may be smaller than you’ve heard. The sun’s influence on climate may be smaller than you’ve heard. onlinewoman/Flickr

Sun and climate moving in opposite directions, says leaked IPCC report

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…
Three years ago we discovered water on the moon, and now we’ve worked out where it’s from. Three years ago we discovered water on the moon, and now we’ve worked out where it’s from. Jason Bache

Blowin' in the (solar) wind: how the moon got its water

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…

Research and News (2)

Research Briefs (2)