Earth

From S23Wiki
Jump to: navigation, search
Earth

Among other things:

  • Terra (Latin name) and we are Terrestrials
  • Adama (Hebrew name) notice how 'Adam' is the root of that
  • SOL-3
  • The home of s23
  • Gaia

WorldAtlas - "The List"


How to find earth

  1. Locate the Virgo Supercluster of galaxies
  2. Within this supercluster find a smaller group of galaxies called the Local Group (talk about universal naming conventions later ;)
  3. Find the second largest galaxy of the Local Group - a galaxy called the Milky Way
  4. Locate one of the spiral arms of this galaxy (called the Orion Arm) which lies about two-thirds of the way out from the center of the galaxy.
  5. Look close and find the solar system - a group of nine planets, as well as numerous comets and asteroids which orbit the sun, a medium size class G (6000 K surface,74% hydrogen, 25% helium) hydrogen bomb thats exploding since about 4.5 billion years (located about 26,000-28,000 lightyears from Milky Way core) (*)
  6. We are the third planet from the sun in the solar system.
  7. Locally you can use GPS coordinates and Google Earth
  8. Welcome, we are the hairless monkeys, you cant miss us.

(*) - within Milky Way you can use galactic coordinates:

"Galactic latitude b is the angle between a position and the galactic equator and runs from -90 to +90 deg. Glalactic longitude runs of course from 0 to 360 deg."

"The galactic north pole is at RA = 12:51.4, Dec = +27:07 (2000.0), the galactic center at RA = 17:45.6, Dec = -28:56 (2000.0). The inclination of the galactic equator to Earth's equator is thus 62.9 deg. The intersection, or node line of the two equators is at RA = 18:51.4, Dec = 0:00 (2000.0), and at l = 33 deg, b=0. "

Links

Ask an Astronomer for Kids - What is Earth's location in space?

Astronomical Coordinate Systems

International Earth-Destruction Advisory Board