Every day, roughly 50–70 billion cells in your body commit programmed suicide.
It's called apoptosis — controlled demolition that keeps you alive.
Without it, you'd be a tumor. Your body kills billions of itself daily so the rest of you survives.
#HumanBody#Biology#Cell
Time runs slower near a black hole.
Hover at the edge for 1 hour and years pass on Earth. Black holes aren't just gravity monsters : they're time machines that obey Einstein's equations exactly.
The universe has no rewind button, but it has slow motion.
#Universe#Blackhole
There is a planet where it rains glass sideways!
HD 189733b orbits so close to its star that winds hit 5,400 mph.
Silicate particles in the atmosphere condense into glass drops and get blown horizontally by supersonic storms.
HD 189733b is a deep blue shredding machine!
Déjà vu isn't a glitch.
It's a timing error in your brain's memory encoding. Your present experience gets stamped twice - once as real-time perception, once as a memory - so it feels like it already happened.
Your brain accidentally filed today under yesterday.
Your liver can regenerate from just 25% of its original tissue.
Cut out three-quarters of it and the remaining piece regrows to full size in weeks.
No other major organ in humans does this.
Your liver is the only part of you that can rebuild itself from almost nothing.
Voyager 1 is 15 billion miles from Earth and still transmitting.
A signal takes 23 hours to reach it. It runs on 1970s technology with less computing power than a modern car key.
It has crossed into interstellar space, the first man-made object to exit our solar system entirely
Saturn's moon Titan has lakes of liquid methane.
The landscape is carved by rivers and seas but the liquid is natural gas, not water.
If you lit a match on Titan's surface, the atmosphere wouldn't ignite as there's no oxygen.
It's a frozen oil refinery that can't catch fire!