GALAXIES RECAP: TYPES, ORBITS, AND FORMATION EXAM WITH 100% CORRECT ANSWERS { GRADED A+}

GALAXIES RECAP: TYPES, ORBITS,

AND FORMATION EXAM WITH 100%

CORRECT ANSWERS { GRADED A+}




Milky Way - ✔✔Our galaxy containing different star populations and

structures


Disk - ✔✔Part of the Milky Way with young stars in a flat plane


Nucleus - ✔✔Central region of the Milky Way with old stars


Stellar Halo - ✔✔Outer region with old stars in randomly-tilted orbits


Dark Matter - ✔✔Mysterious substance constituting 90% of the Milky

Way's mass

, Star Metallicity - ✔✔Amount of heavy elements in stars, high in young

stars


Hubble's Law - ✔✔Principle used to measure the Milky Way's mass


Globular Clusters - ✔✔Spherical groups of ancient stars in the Milky

Way


Big Bang Nucleosynthesis - ✔✔Process creating elements in the early

universe


Star Orbits - ✔✔Paths stars follow, tilted in the stellar halo


New Stars Forming - ✔✔Ongoing process in regions with gas, like the

disk


Star Colors - ✔✔Indicator of star temperature, blue for young stars


Milky Way Summary Chart - ✔✔Comparison of properties in disk,

nucleus, and stellar halo