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A star in the constellation Centaurus has a diamond core 4,000 km wide
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✦ NEW · WEBSITE EXCLUSIVE

A star in the constellation Centaurus has a diamond core 4,000 km wide

Forty-eight light-years from Earth sits BPM 37093, a white dwarf that astronomers have nicknamed Lucy. Its interior has crystallized into a single carbon lattice 4,000 kilometers wide. It is, in the most literal sense, a diamond the size of a small moon.

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✦ 344 facts on file⚡ updated daily🐚 3.59M followers on facebook📍 @fact5🔬 sources or it didn't happen🦐 reality > fiction📨 2 on the email list✦ 344 facts on file⚡ updated daily🐚 3.59M followers on facebook📍 @fact5🔬 sources or it didn't happen🦐 reality > fiction📨 2 on the email list✦ 344 facts on file⚡ updated daily🐚 3.59M followers on facebook📍 @fact5🔬 sources or it didn't happen🦐 reality > fiction📨 2 on the email list
02 / BROWSE

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03 / RECENT FILE

This week’s weird 🌀

See archive →
Killed By His Own Invention
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Ironic Twists
Killed By His Own Invention
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Unbelievable Records
Lawnchair Larry
The Oak Coffins of Norfolk
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Creepy Discoveries
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Fauja Singh, a British-Indian marathon runner born on April 1, 1911 in Punjab, completed the 2011 Toronto Waterfront Marathon in 8 hours and 11 minutes at the age of 100, becoming the first centenarian reported to finish a marathon distance, though Guinness did not ratify the record due to the lack of a birth certificate.
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Unbelievable Records
Fauja Singh, a British-Indian marathon runner born on April 1, 1911 in Punjab, completed the 2011 Toronto Waterfront Marathon in 8 hours and 11 minutes at the age of 100, becoming the first centenarian reported to finish a marathon distance, though Guinness did not ratify the record due to the lack of a birth certificate.
The Midnight Dishwasher
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Heartwarming Humanity
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The Teacher and His 9,000-Year-Old Cousin
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Creepy Discoveries
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Miss Unsinkable
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Unbelievable Records
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04 / WATCH

30-second explainers ▸

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Cats cannot taste sweetness because they carry a pseudogenized Tas1r2 sweet taste receptor gene, leaving every member of the cat family 'sweet-blind'.
Jul 04, 2026
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When you vividly imagine an event, your brain activates many of the same regions as when you experience it for real — which is why imagined scenes can feel strikingly like memories, even though the brain uses subtle signals to tell them apart.
Jul 04, 2026
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Octopuses have a separate 'brain' in each of their eight arms — around two-thirds of their neurons live in the arms, which can taste, decide, and react without input from the central brain.
Jul 04, 2026
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Sperm whales sleep vertically in pods, hanging motionless nose-down just below the ocean surface in tight clusters for short 10-15 minute intervals, a behavior first documented by scientists in 2008.
Jul 04, 2026