The Moon illusion is what makes the Moon look giant when you see it rising over a distant horizon. An astronomer explains what causes this awe-inspiring trick of the mind.
Pluto was recategorized from a planet to a dwarf planet in 2006.
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A curious kid asks: Why does it matter if Pluto is a planet or a dwarf planet?
Plastic trash accumulates in trees and shrubs along the Los Angeles River.
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Plastic is made from oil and natural gas, which started out as fossilized plant and animal material. But buried deep underground for millions of years, those materials changed in important ways.
There’s a special type of particle called a ‘tachyon’ which would have to travel faster than the speed of light. But here’s the hitch – we can’t prove tachyons even exist.
Interior view of Polito’s Royal Menagerie, Exeter Change, Strand, Westminster, London, 1812.
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Vahe Peroomian, USC Dornsife College of Letters, Arts and Sciences
The dwarf planets in our Solar System are cold, dark, far away and full of surprises.
Artist’s rendering of the Chicxulub asteroid entering Earth’s atmosphere 66 million years ago, triggering events that caused a mass extermination.
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