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Articles on Molecules

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A nanographene molecule imaged by noncontact atomic force microscopy. Patrik Tschudin/gross3HR/Wikimedia Commons

What do molecules look like?

A physicist explains how atoms arrange themselves into molecules – and how scientists are able to image these tiny bits of matter that make up everything around you.
It can stretch your mind to ponder what’s really out there. Stijn Dijkstra/EyeEm via Getty Images

Does outer space end – or go on forever?

Astronomers know a lot about what’s in outer space – and think it’s possible it never ends.
Lasers create colorful light shows at concerts, are used by doctors in surgeries – and are used in scientific laboratories. EyeWolf/Getty Images

What is the slowest thing on Earth?

Physicists can use bright, hot lasers to slow atoms down so much that they measure -459 degrees Fahrenheit.
Gravity helps stars to form. UNIMAP / L. Piazzo, La Sapienza – Università di Roma; E. Schisano / G. Li Causi, IAPS/INAF, Italy

Curious Kids: how long has gravity existed?

Gravity exists because the universe is full of ‘stuff’ – here’s how it came to be.
Mole Day is an unofficial holiday celebrated among chemists on Oct. 23, between 6:02 a.m. and 6:02 p.m. The time and date are derived from Avogadro’s number. Ekaterina_Minaeva/Shutterstock.com

A day to celebrate chemistry’s favorite unit — the mole. But what’s a mole?

Chemists sure know how to party. And here is the proof. On October 23rd they celebrate their hallowed unit: the mole. Find out what that’s all about.
Westy48/Flickr.

Curious Kids: what is fire?

Put simply, it’s the outcome of a chemical reaction, which humans learned how to make some 400,000 years ago.
Molecular machines are ready to join forces and take on real-world work. Chenfeng Ke

3-D printing turns nanomachines into life-size workers

Research on molecular machines won last year’s Nobel Prize in chemistry. Now scientists have figured out a way to get these tiny molecules to join forces and collaborate on real work on a macro scale.

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