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Astronomy Notes Ch 1, Schemes and Mind Maps of Astronomy

Pontificia Universidad Católica de Puerto Rico - MayaguezAstronomy

Astronomy Notes about the first chapter

Typology: Schemes and Mind Maps

2022/2023

Uploaded on 09/05/2025

froggleati
froggleati 🇺🇸

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ASTR4005 29
Motion in the universe
- Earth rotates on its axis
- Earth orbits sun each year
- Solar system relative to
nearby stars
- Solar neighborhood moves
around the Milky Way
- Milky Way moves toward M31
- Local Group (MW, M31, M33
and friends) moves toward the
Virgo Supercluster
- Universe is expanding - far
galaxies are moving away
from us
How we know the universe is
expanding: Hubble in 1920s
pf3

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ASTR4005 29

Motion in the universe

  • Earth rotates on its axis
  • Earth orbits sun each year
  • Solar system relative to nearby stars
  • Solar neighborhood moves around the Milky Way
  • Milky Way moves toward M
  • Local Group (MW, M31, M and friends) moves toward the Virgo Supercluster
  • Universe is expanding - far galaxies are moving away from us How we know the universe is expanding: Hubble in 1920s

Big bang, cosmic microwave background Rotation - east to west Questions  Now you are fortunate enough to be stargazing away from the city lights in Puerto Rico. Where is Polaris in the night sky? 18 degrees form the horizon due north bc pr 18 degrees above the equator The ecliptic- the average path the sun take in the course of a year as well as the planets