A physicist explains that the short answer is both … and neither.
Articles on Curious Kids
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Puffy to wispy, barely there or dark and menacing, clouds come in many shapes and sizes. Each tells a story about what’s going on in the atmosphere.
Animals can be born with genetic or developmental issues that make it hard for them to live normal lives. They also can develop mental health problems in response to conditions around them.
Blue, green orange, brown − water comes in many colors, depending on what’s in it.
Many animals show signs of high intelligence, including strong memory, self-awareness and communication skills.
Black doesn’t appear in the visible spectrum of electromagnetic radiation. So why do we still see it?
Pain is unpleasant, but it does have a purpose.
The answer has to do with molecules.
A rocket needs to overcome the force of gravity to leave Earth behind.
Wars always include killings and destruction, but there are limits. An expert in international law explains the rules of war laid out in the Geneva Conventions − and why they’re so hard to enforce.
The International Space Station is an engineering feat that has led to countless scientific discoveries. Like the thousands of satellites in orbit, it manages to stay up in the atmosphere.
The universe is constantly expanding, but how do scientists think about what it’s expanding into?
The brain science behind the power struggle between parents and their children.
There’s a lot of hot rock in the way, and sooner or later your hole would collapse.
You can train your brain to wake up on time naturally.
It’s all about perspective: The higher you go, the more you can see the curve.
Jupiter’s composition is more similar to that of the Sun than that of the Earth.
Both gasoline and diesel fuel are refined from crude oil, but they are good for different things and can’t be used interchangeably.
Be very afraid – if you’re an insect.
Communism, Marxism and socialism are all different economic and political ideas. As concepts, they all seek to move toward greater economic equality and public participation in democracy.
Top contributors
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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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Associate Dean of Innovation and Engagement, Swinburne University of Technology
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PhD Candidate, University of Southern Queensland
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Distinguished Professor Emeritus of Anthropology, Binghamton University, State University of New York
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Professor, Philosophy of Science, The University of Melbourne
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Assistant Professor of Medicine, Bond University
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Professor of Science Communication and Chemistry, University of Hull
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Associate Professor, School of Animal and Veterinary Science, Adelaide University
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Principal Lecturer in Wildlife Conservation, Nottingham Trent University
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Whale Scientist and Lecturer, Faculty of Science and Engineering, Macquarie University