There is a reason why it’s easier to roll marbles down rather than up a hill. And the answer (to this and to gravity itself) is all about acceleration.
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Articles on Curious Kids
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A single colony of bees can have 60,000 bees in it. Together, they can visit up to 50 million flowers each day to collect pollen and nectar. They’re not called ‘busy bees’ for nothing!
They might not really fly on broomsticks or cast spells, but the witches and wizards of books and films are based on real people.
Some rainstorms drench you in a second, while others drop rain in a nice peaceful drizzle. A meteorologist explains how rainstorms can be so different.
The oldest known skeleton of our species Homo sapiens is about 300,000 years old. But there was a time when humans didn’t exist at all and the world was covered in nothing but slime.
A light invisible to humans makes chemicals in our skin very excited. In fact, the chemicals become so excited they change shape and become vitamin D.
It’s a lot more than you might think.
Human genes are one of the main reasons we can’t grow wings. And even if humans did have wings, they wouldn’t necessarily allow us to fly.
If you could go right into the middle of the Sun, everything would be incredibly bright - and perhaps a little bit pink.
Your faithful friend’s view of the world is different than yours, but maybe not in the way you imagine.
If gravity was half as strong, you could jump much higher.
Having longer top eyelashes can enhance our ability to express our feelings and communicate with others. But the most significant reason we have them is to protect our eyes.
Physicists can use bright, hot lasers to slow atoms down so much that they measure -459 degrees Fahrenheit.
How do people in a special airplane flight get to float like there is no gravity – just like astronauts? An aerospace engineer explains.
There are two types of time travel: going back in time and going forward in time. And remarkably, people can feel time at different rates - but usually don’t notice it.
The distance between the ISS and Earth is the same as about 3,850 football fields. To bring the station down, rockets will lower it a bit, and then gravity will send it crashing the rest of the way.
Imagine being able to detect a smell from more than a kilometre away. Dogs can sniff out things from a greater distance than that.
Australia is home to 20 of the 25 most venomous snakes in the world.
Boogers, snot, bogeys and boogies are the common names for mucus that’s dried in your nose. Mucus is very important as it protects the body from getting sick.
Burping is a normal way for the body to release swallowed air, and often happens after eating or drinking fizzy drinks!
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Reader in Astrophysics, Keele University
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Associate Professor of Science & Medicine, Bond University
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Professor (Astrophysics), University of Southern Queensland
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PhD Candidate, University of Southern Queensland
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Researcher, The University of Melbourne
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Associate Professor, Philosophy of Science, The University of Melbourne
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Professor, Macquarie University
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Senior Teaching Fellow, Medical Program, Bond University
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Lecturer, Centre for Astrophysics and Supercomputing, Swinburne University of Technology
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Lecturer, University of Southern Queensland
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Associate Professor, School of Animal and Veterinary Science, University of Adelaide
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Honorary Associate Professor, UNSW Sydney
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Associate professor, Astronomy, University of Regina
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PhD Candidate, The University of Queensland
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Professor of Astronomy, UMass Lowell
