In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Your body is creating and killing about 2.4 million red blood cells per second.
17
Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
14
Cows can sleep standing up, but they can only dream lying down.
745
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Your thumb is about the same size as your nose.
124