Scientists have measured the shortest interval of time ever recorded – and now know it takes 247 zeptoseconds for a particle of light to cross a single hydrogen molecule.

Photoelectric effect

It’s official folks. It takes 247 zeptoseconds, or a trillionth of a billionth of a second, for a particle of light to cross a single molecule of hydrogen marking the shortest interval of time ever recorded. Yep, that’s a 1 written behind 20 zeroes and a decimal point. Blink, blink. It’s gone. The measurement was…

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Our wonderful Sun – the brightest star in the sky!

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Our Sun is an ordinary star although it is quite large compared to other stars. In terms of “mass”, most stars have less than half the mass of our Sun. You could fit 109 Earths across the Sun. The Romans called the Sun “sol” (as in SOlar).

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