LMR-003 · Gravity & Time
Gravity
It's not a pull. It's a slope.
§ A first look
§ Depths
Six ways into the same idea — from bedtime story to chalkboard. No order required.
L1 · Crayon
Told like a bedtime story.
For a curious 10-year-old. No jargon. Just a picture in your head.
Drop a ball — it falls. Jump up — you come back down. Throw a ball sideways — it curves down instead of zooming off forever like a sensible projectile. Something tugs everything toward the middle of the Earth, all the time, without taking breaks. We call it gravity. Every big heavy thing has its own pull — Earth, the Moon, the Sun, your aunt's enormous fruitcake — and the bigger and heavier, the stronger. That's why Earth holds you tight to the ground but only holds the Moon at a polite arm's length, the way you hold a cousin you don't know that well.
§ Strange but true
- 01Gravity isn't a force pulling you down. It's the shape of the floor.
- 02Astronauts aren't weightless because there's no gravity. They're falling — just sideways fast enough to keep missing Earth.
- 03Light, which has no mass, still bends around the Sun. Einstein bet his career on it in 1915. He won.
§ From the field journal
Gravity
"It's not a pull. It's a slope."
— observed, sketched, not yet fully understood.
§ Nearby
Constellations near Gravity
→
Time Dilation
Move fast, age slow. Sit in deep gravity, age slow. Time is weather.
→
Black Hole
A place in the sky where the door only opens one way.
→
Spacetime
Space and time aren't a stage. They're an actor.
→
Light
You're reading messages that left stars before humans existed.
→
Gravitational Waves
Ripples in spacetime, detected for the first time in 2015.
→
Lensing
Mass bends light. Galaxies turn into natural telescopes.