Why do spacecraft need to keep themselves at a low temperature to function properly?
Solar System
Solar System
Deep Space
What is Heat Death?
Is this one of the ways the universe could end?
Astronomy
What is absolute and apparent magnitude?
How do we measure the brightness of objects in the night sky?
Deep Space
How close to the edge of a galaxy can planets exist?
Is there such a thing as a ‘galactic habitable zone’?
Solar System
What are the cores of the gas giants made up of?
What’s inside these massive planets?
Astronomy
Can we see the Big Bang?
Are we able to observe the birth of the universe?
Space Exploration
How does NASA protect Curiosity from solar flares?
How does NASA keep their flagship Mars rover safe?
Astronomy
Why do images of deep space objects look so colourful?
What causes the vivid colours in deep space photography?
Space Exploration
How do astronauts send tweets from the ISS?
Do astronauts have access to Twitter in space? Find out here.
Astronomy
What’s the best time to view Mars from the Northern Hemisphere?
When is it best to observe the Red Planet from Earth?
Deep Space
How loud would stars be if space was full of air?
If we could hear in space, how far from a star would we need to be to hear it?
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Solar System
Why do scientists think there is a chance of life existing on Europa?
What lurks beneath this mysterious moon of Jupiter?
Space Exploration
What’s usually for dinner on the International Space Station?
What do astronauts eat in space in the modern era of space exploration?
Solar System
What is the Oort cloud?
What is the is region of space at the edge of the Solar System?
Astronomy
What do the different ways of identifying stars with numbers mean?
How do we catalogue stars in the night sky?
Solar System
Is there any way to protect Earth from meteors like the one that landed in Russia?
How would we stop an incoming asteroid from destroying our planet?
Deep Space
What is the smallest star?
Josh Barker from the National Space Centre answers this one for us.
Space Exploration
How many countries have rockets capable of reaching space?
Aside from Russia and the USA, who else is able to send people and payloads into space?
Astronomy
How much of the universe does the Milky Way block us seeing?
Does the Milky Way block our view of stars in the night sky?
Solar System
Do we see the entire Sun from Earth?
Is there a far side of the Sun that remains unseen, like the Moon?