Space is famously cold. The number repeated in textbooks, documentaries and trivia lists is about 2.7 kelvin, or roughly −270.4 °C — less than three degrees above absolute zero.That number is real and extraordinarily well measured. NASA's C...
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Suppose you buy a brand-new one-terabyte SSD and place it on an impossibly precise scale. Then you fill every available byte with photographs, films, documents and music. Has the drive becom...
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A thirsty tomato plant can be surprisingly noisy. Not to us: stand beside it in a greenhouse and you will probably hear nothing beyond leaves rustling and the ordinary sounds of the room. Bu...
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Imagine taking the mass of a mountain and compressing it until its boundary is smaller than an atom. There would be no miniature rocky mountain inside, no visible sphere and certainly nothin...
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Taste a drop of seawater and the answer seems obvious: the ocean contains salt. The more interesting question is how it got there. There are no gigantic salt deposits steadily dissolving int...
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What’s Inside a Black Hole? Black holes are some of the most mysterious objects in the universe. They form when a massive star collapses under its own gravity, creating a region of space...
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