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Artículos sobre X-ray

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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.
The Small Magellanic Cloud galaxy here seen in infrared light, but it looks different when viewed at other wavelengths. ESA/NASA/JPL-Caltech/STScI

Looking at the universe through very different ‘eyes’

The galaxies, stars and planets in our universe can look very different when you view them through equipment that sees beyond the visible light our eyes can see.
Pocket your phone without worry. Phone image via www.shutterstock.com.

Why you can’t fry eggs (or testicles) with a cellphone

Did your holiday gift list include radiation-shielding undies to protect your privates from cellphone radio waves? A radiation expert explains they’re unnecessary – your phone won’t affect your fertility.
This skull belongs to the carnivorous gorgonopsian therapsid Smilesaurus ferox which lived 255 million years ago. Cradle of Humankind/Flickr/Wikimedia

You can thank our pre-mammalian ancestors for your sexy teeth

Modern sabre-tooth mammals have their canines constantly on display. This allows them to seduce mates. But was sexual selection also an important phenomenon among our pre-mammalian ancestors?

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