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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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✦ 608 facts on file⚡ updated daily🐚 3.59M followers on facebook📍 @fact5🔬 sources or it didn't happen🦐 reality > fiction📨 2 on the email list✦ 608 facts on file⚡ updated daily🐚 3.59M followers on facebook📍 @fact5🔬 sources or it didn't happen🦐 reality > fiction📨 2 on the email list✦ 608 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 🌀

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Ruby the elephant painted pictures worth thousands. 🎨
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Animal Oddities
Ruby the elephant painted pictures worth thousands. 🎨
Negro the dog invented his own leaf-based currency. 🍪
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Animal Oddities
Negro the dog invented his own leaf-based currency. 🍪
Swansea Jack kept diving in when humans were drowning. 🐕
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Animal Oddities
Swansea Jack kept diving in when humans were drowning. 🐕
On Aug 22, 2026, a humanoid robot ran 100m in 9.39 seconds at Beijing's World Humanoid Robot Games — beating Usain Bolt's 17-year-old world record of 9.58s.
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Current World
On Aug 22, 2026, a humanoid robot ran 100m in 9.39 seconds at Beijing's World Humanoid Robot Games — beating Usain Bolt's 17-year-old world record of 9.58s.
Betty invented a tool when hers was stolen. 🐦
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Animal Oddities
Betty invented a tool when hers was stolen. 🐦
Paul the octopus predicted eight World Cup matches correctly. 🐙
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Animal Oddities
Paul the octopus predicted eight World Cup matches correctly. 🐙
Your grandmother's wallpaper could kill a child in its sleep. ☠️
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Dark History
Your grandmother's wallpaper could kill a child in its sleep. ☠️
Peru revealed a sacrifice too large to comprehend. 🦴
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Creepy Discoveries
Peru revealed a sacrifice too large to comprehend. 🦴
04 / WATCH

30-second explainers ▸

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Cross your index and middle fingers, close your eyes, and touch the tip of your nose — one object can feel like two. This tactile effect is called the Aristotle illusion and has been described for more than 2,000 years.
Sep 05, 2026
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Light travels at about 186,282 miles per second — fast enough to circle Earth roughly 7.5 times in one second, yet light from Proxima Centauri, the nearest star beyond our Sun, still takes about 4.24 years to reach us.
Sep 05, 2026
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Pinching your nose makes it difficult to sustain a normal closed-mouth hum because humming depends on sound and airflow resonating through the nasal passages.
Sep 05, 2026
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Footprints and tracks left by Apollo astronauts can remain on the Moon for extremely long periods because there is virtually no atmosphere, wind or rain to erase them, although micrometeorite impacts slowly disturb the lunar surface.
Sep 05, 2026
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Your digestive tract is constantly active, and the gurgling sounds called borborygmi are produced as gas and liquid move through the stomach and intestines. They are often more noticeable when the digestive system is relatively empty.
Sep 05, 2026