Vice Chancellor's Senior Research Fellow, University of Southern Queensland
Are we about to see a rare green comet light up the sky? An expert on what to expect from Nishimura
Nishimura would swing closer to the Sun than the orbit of Mercury this month
Coming up in 2020: Guide to some of the best meteor showers this year promises
The year starts with a bang with the Quadrantids providing a treat for northern hemisphere viewers
Water, water, everywhere in our Solar system but what does that mean for life?
It should be no surprise that water played a key role in the formation and evolution of our planetary system