Space & Cosmos
Mind-blowing facts about our universe, from quantum physics to galactic phenomena.
Did You Know?
Some stars are cool enough to touch.
Brown dwarfs, failed stars that never got massive enough to sustain nuclear fusion, can have surface temperatures as...
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There’s a planet made largely of diamonds.
55 Cancri e, a super-Earth about 40 light-years away, is likely made largely of carbon under such extreme...
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The most powerful explosion ever observed could have melted lead from 110 light-years away.
GRB 080916C, a gamma-ray burst detected in 2008, released more energy in a few seconds than our Sun...
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There’s a planet that experiences metallic snow.
On the planet WASP-178b, temperatures are so high that metals exist as vapors in the atmosphere. These metallic...
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The Sun’s atmosphere is much hotter than its surface.
Counter-intuitively, the Sun's outer atmosphere (corona) is about 300 times hotter than its surface, reaching temperatures over 1...
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Some parts of Mercury are hot enough to melt lead but cold enough to harbor ice simultaneously.
Due to Mercury's minimal atmosphere and slow rotation, temperatures can range from 427°C in direct sunlight to -180°C...
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The largest known star, UY Scuti, is so big that it would take 1,700 years to walk around it at normal walking speed.
This hypergiant star has a radius more than 1,700 times that of our Sun. If placed at the...
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Jupiter’s magnetic field has changed direction several times in under a decade.
Recent observations show that parts of Jupiter's magnetic field have reversed polarity several times since 2011. This is...
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Black holes create the perfect pitch of B-flat.
NASA's Chandra X-ray Observatory detected sound waves emanating from a supermassive black hole in the Perseus galaxy cluster....