The loud noise might be a warning that there is something falling nearby, or flying towards you. Our brain tells our eyes to quickly shut, to help protect them from any damage.
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Many people think green snot means you are really sick, or that you need antibiotics. Not true. Green snot is actually a sign that our immune system is working and that we are getting better.
The pull created by a black hole is so strong that if you get too close to one – even if you are travelling away from it at the fastest speed it is possible to go – you will never be able escape.
If you’re looking for ways to keep kids occupied on road trips or at home, we’d love you to check out a podcast called Imagine This, a co-production between ABC KIDS listen and The Conversation.
A wormhole is like a tunnel connecting two places in space. They would be incredibly useful and are great for science-fiction stories.
The problem is we haven’t found any evidence of them existing.
The Big Bang created a cloud of dust and rocks that included a lot of rocks that were made of ice, like giant snowballs. That’s where some of the water came from.
Puppies and kittens are born without teeth, but by around two months of age they have a full set of baby teeth.
To answer this tricky question, we have to look back in time to when the Earth was born, 4.5 billion years ago.
Listen up. Today we’re hearing all about why your ears pop when you go up, up, up and away.
The short answer is that the accent you have depends on the people you grew up with and the history of the place that you live in.
Pretty much as soon as we understood what galaxies were, we realised they are all moving away from each other. And the ones that are further away are moving faster. In short, the universe is expanding.
Echidnas can survive quite low levels of oxygen.
People used to think that boy lions had big shaggy manes to protect their necks from being bitten or scratched during fights. But scientists soon realised this idea didn’t make much sense.
When crustaceans are cooked, some chemicals in their shells react with heat and change colour.
Out there in space there is no air. If you took your helmet off, all the air you need to breathe would whoosh out.
Water is one of very few chemicals that is found as a liquid, solid and gas at any time on Earth. These three states of water help explain why ice makes a cracking sound when water is poured over it.
Trees evolved many times around the world.
The most interesting part of our body that changes during sleep is our brain.
Sea otters can break the shell on a shellfish by hitting it against a stone resting on their belly. This can look like clapping. Some even have a favourite stone they carry around in their armpits.
Those “itchy bites” are actually reactions to mozzie spit.
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Reader in Astrophysics, Keele University
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