Questions I've had about science

Turtles all the way down

8000 BCE

It is still quite possible that we are a system inside a system, inside another system, inside yet another system. Turtles all the way down

Earth's Birthday (Estimated)

4004 BCE

https://blogs.scientificamerican.com/history-of-geology/october-23-4004-bc-happy-birthday-earth/

Johannes Kepler suggested that the gravitation of the moon causes the tides

1609

1616 Galileo Galilei was wrong

1616

Galileo had an idea about the tides. It turned out he was wrong. We all get it wrong sometimes, or we're not trying nearly hard enough.

(Sir) Isaac Newton Publishes, Philosophiae Naturalis Principia Mathematica (Mathematical Principals of Natural Philosophy)

1687

-Often known as Principia.
-It is commonly said to be the most influential book on physics and probably all science. (At least to date)
-Principia gave an exact quantitative description of bodies in motion, with three basic laws of motion. These laws make sense to us from the world we observe, but creating a mathematical expression to describe the motion is so far beyond general comprehension.

LIGOs finally detect gravitational waves

Sep 14, 2015

-The gravitational waves were detected at 5:51 a.m. Eastern Daylight Time on 9/14/2015.
- Both Laser Interferometer Gravitational-wave Observatories (LIGO), Livingston, Louisianna, and Hanford, Washington,USA, registered the grav. waves