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Transcript of Astronomy
What is Astronomy??
- The scientific study of celestial objects
Formulated a model of the universe with the sun in the center, not the earth.
- He invented the modern day telescope
- Proved the Copernican theory
- In 1633 he was put on house arrest for his remaining years by the catholic church
- Invented the older version of the compass
-Co-invented calculus with the help of Gottfried Leibniz
-Universal Law of Gravitation
-Theory of General Relativity
-Theory of Special Relativity
~ Includes the effects of gravitation
~ According to the theory of GR, mass and energy determine the geometry of spacetime
~ Proved Newton's law of universal gravitation
~The speed of light is the same for all observers
~ If you travel faster than light, time travel would occure
~ Albert Einstein believes that travelling at or faster than the speed of light is impossible
- Known for his work to better understand black holes
- Writing science novels that are very popular in the science field
- Elaborated on Albert Einstein's theory of relativity
History of Astronomy
Babylonians predict lunar eclipses
Mesopotamian astronomers made careful observations from the tops of pyramid-like towers called ziggurats
Building of Stonehenge
Thales said to have predicted solar eclipse
Bone carvings keep track of moon phases
Building of Bighorn Medicine Wheel
The closer to the sun, the hotter the planet
Earth isn't too close to the sun but also isn't too far away
Earth is the only planet in our solar system that can support life naturally
Black holes are places where ordinary gravity has become so extreme that it overwhelms all other forces in the universe
Once inside, nothing can escape the black hole's gravity, not even LIGHT
"Through quantum effects, a black hole can slowly "radiate" and lose mass/energy." -Stephen Hawking
Scientists believe that we can only see about 5% of the matter in the Universe.
Fun Fact 1:
Venus is quite a bit hotter than Mercury, even though it is further away from the Sun. The thickness of Venus’ atmosphere/air traps heat near the surface of the planet.
Fun Fact 2:
Astronomy is a very large topic. It includes anything that you could possibly find in space. I encourage all of you to further explore the world of astronomy and if it's interesting to you, maybe pursue it.