Cosmology Flashcards
Catalogue of Astronomical Objects (Galaxies & Nebulas)
messier
No defined shape, often formed by gravitational interactions
Irregular Galaxies
Oval Shape, very little gas and dust, older stars
Elliptical Galaxies:
is the study of the origin, development, structure, history, and future of the entire universe.
cosmology
Contains every particle in the universe
Insanely dense and hot
Super Particle/ God Particle
Keeps atoms together
Strong Nuclear Force
This theory includes:
Strong Nuclear Force
Electromagnetic Force
Weak Nuclear Force
Grand Unified Theory/ GUT
Electromagnetic Force
Weak Nuclear Force
Electroweak Force
Generation of stars:
Non-metallic
Made of 74% Hydrogen and 25% Helium
Theoretical/ Haven’t been observed
1st Generation Stars (Population III Stars)
Low metallic
Oldest stars that have been observed
2nd Generation Stars (Population II Stars)
Highly metallic
Composed of the other 1% lighter elements
3rd Generation Stars (Population I Stars
Disk-shaped with spiral arms rich in gas and dust, ongoing star formation
With enough time, the “belt” in the Milky Way galaxy will disperse and disappear
Spiral Galaxy:
Is a massive gravitationally bound system of stars, stellar remnants, gas, dust, and dark matter.
Typically contains billions to trillions of stars.
galaxies
Began as small gas clouds merging over billions of years.
galaxy formation
Galaxies change shape, size, and star population over time.
galaxy evolution
