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✦ SCIENCE ✦

SCI
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⚗️ Physics, chemistry & biology, in big comic pictures!

📖 200 Topics ⏱️ 5 min per comic 🧠 Quiz included
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APPLE FALLS
Newton, 1666
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GRAVITY DISCOVERED
Force of Attraction
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MOON ORBIT
Gravity in Space
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FEATHER & HAMMER
Moon Experiment
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ESCAPING GRAVITY
11.2 km/s
🌍 GRAVITY: WHY THINGS FALL DOWN
TOPIC 02 · FORCES & MOTION · MASS & WEIGHT · CHAPTER A
PAGE 1 OF 5 · A HUG YOU CANNOT SEE
THE FORCE BEHIND EVERYTHING
Gravity pulling objects toward Earth — every object in the universe attracts every other object, the invisible force behind falling apples, orbiting moons, and galaxies
EVERY OBJECT PULLS EVERY OTHER OBJECT
Toss a ball, it goes down. It always does, unless something else nudges it. That steady downward tug has a name: gravity. Every bit of stuff pulls a little on every other bit, even you and the floor, you and a star far away, though most pulls are tiny next to the Earth under your feet.

Newton said the same kind of idea that tugs an apple can also curve the path of the Moon, if you think big and long range. One big story of pulls ties falling apples to wheels and worlds.
"Farther apart, a softer tug; big masses, a stronger pull." (Newton, plain words.)
PULL!
WHAT IS GRAVITY?
Gravity field diagram showing lines of force radiating toward a massive object — bigger mass means stronger gravity, and farther away means weaker gravity
🏠 Gravity is a force of attraction
⚔️ Every mass pulls every other mass
🔴 Bigger mass = stronger gravity
📈 Farther apart = weaker gravity
NEWTON'S FORMULA
Newton's Universal Law of Gravitation formula: F equals G times m1 times m2 divided by r squared — G is the gravitational constant, m1 and m2 are the two masses, r is the distance between them
🧩 F = G × m₁ × m₂ ÷ r²
🔺 G = gravitational constant
🔺 m₁, m₂ = the two masses
🔺 r = distance between them
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