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.
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.
Nobody knows for sure where black holes lead to.
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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.
Imagine This is a co-production between ABC KIDS listen and The Conversation, based on our Curious Kids articles.
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Sunanda Creagh, The Conversation e Molly Glassey, The Conversation
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.
The existence of wormholes is not forbidden by our current theories of the universe. So we can say that they do exist in theory.
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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.
Where all the water in the ocean came from is a very good question. Scientists have been wondering about it for a long time.
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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.
Most of the time you won’t be able to tell if a puppy or kitten’s tooth falls out. Often they fall out in food, or the animal might even swallow them.
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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.
Echidna blood is especially good at holding and transporting oxygen.
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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.
In the wild, when crabs and prawns are freely moving on the ocean floor, their shells usually have a dull colour.
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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.
Different kinds of plants make different kinds of seeds. Some seeds grow into trees and other seeds grow into other kinds of plants.
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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.