Table of contents
Difference between astronomy and astrology
Planets and dwarf planets
Solar system: Our earliest ideas
Special topics
Proof that the Earth is revolving
Look up at the night sky – Are there immensely huge things that are just a bit too faint for the human eye to see? You betcha! Check out this amazing composite photo. This shows the actual apparent size of deep space objects, in our night sky, if they were brighter.
Here are the same object labeled
The images are in scale with one another, including the Moon, but not to the Milky Way background.
1. The Moon.
2. Andromeda Galaxy.
3. Triangulum Galaxy.
4. Orion Nebula.
5. Lagoon Nebula.
6. Pinwheel Galaxy.
7. Sculptor Galaxy.
8. Supernova remnant 1006.
9. Veil Nebula.
10. Helix Nebula.
11. Sombrero Galaxy.
12. Crab Nebula.
13. Comet Hale-Bopp (c. 1997)
14. Venus.
15. Jupiter.
16. International Space Station.
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“Astronomy is the study of the Universe and the changes that take place in and around all objects moving through space. It’s more than just Earth and our Solar System. The study of astronomy covers every planet, object, and bit of energy flowing through the universe.
So where did the word cosmos come from? It’s actually a Greek word that describes an orderly and interconnected universe. Astronomy is the study of that universe and as you learn more, you will discover how each part is connected to the others. “
– http://www.cosmos4kids.com/
Astronomy Amateur 3 V2CC BY-SA 3.0view terms
User Halfblue on en.wikipedia
Also on this website
Gravitational repulsion and the Dipole Repeller
External links
NASA Jet Propulsion Lab Infographics
Quotes
“Interestingly, according to modern astronomers, space is finite. This is a very comforting thought– particularly for people who can never remember where they have left things.”
– Woody Allen
Why should humanity eventually colonize the stars?
“Ask ten different scientists about the environment, population control, genetics and you’ll get ten different answers, but there’s one thing every scientist on the planet agrees on. Whether it happens in a hundred years or a thousand years or a million years, eventually our Sun will grow cold and go out. When that happens, it won’t just take us. It’ll take Marilyn Monroe and Lao-Tzu, Einstein, Morobuto, Buddy Holly, Aristophanes .. and all of this .. all of this was for nothing unless we go to the stars.”
– Writer J. Michael Straczynski, from a character’s speech (Commander Sinclair) in Babylon 5, season 1, “Infection”
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