Science
Black Holes Can Spin at Nearly the Speed of Light
Some black holes rotate at up to 99.8% the speed of light, creating extreme effects that challenge our understanding of physics.
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Facts
There Are More Stars in the Universe Than Grains of Sand on All Earth’s Beaches
The universe contains more stars than grains of sand on all Earth's beaches - over 1 septillion stars!
History
The First Email Was Sent in 1971
The first email was sent in 1971 by Ray Tomlinson, who also chose the @ symbol for email addresses that we still use today.
Science
DNA Unwound Would Stretch from Earth to the Sun and Back 600 Times
If unwound, all the DNA in your body would stretch from Earth to the Sun and back 600 times - yet it all fits inside tiny cells!
Facts
A Day on Jupiter Lasts Only 10 Hours
Jupiter rotates so fast that a day lasts only 10 hours, despite being the largest planet in our solar system.
Facts
The Human Nose Can Detect Over One Trillion Different Smells
Your nose can distinguish over one trillion different scents, making smell one of humanity's most sophisticated senses.
History
Napoleon Was Actually Average Height for His Time
Napoleon was actually average height for his time - the myth of his shortness came from British propaganda during the Napoleonic Wars.
Science
Light Takes 8 Minutes to Travel from the Sun to Earth
Sunlight takes 8 minutes and 20 seconds to reach Earth, meaning we always see the Sun as it was 8 minutes ago.
Facts
Dolphins Have Names for Each Other
Dolphins use unique signature whistles as names, allowing them to identify and call to specific individuals in their pods.