Galaxies and the Universe

study of the universe

• Cosmology
• Geology
• Meteorology
• Astrophysics

Tags

NGSS.HS-ESS1-2

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

core of a galaxy in which highly energetic objects or activities are located

• active galactic nucleus
• cosmic center
• stellar nucleus
• galactic core

gigantic formation of clusters of galaxies hundreds of millions of light-years in size

• galaxy cluster
• supercluster
• nebula
• star system

a value of approximately 70 kilometers per second per megaparsec

• Big Bang theory

• superclusters

• International Space Constant

• Hubble constant

Tags

NGSS.HS-ESS1-2

states that the universe began as a point and has been expanding ever since

• Steady State theory
• Cosmic Inflation theory
• Big Bang theory
• Multiverse theory

Tags

NGSS.HS-ESS1-2

proposes that the universe looks the same on large scales to all observers and that it has always looked that way

• Steady State Theory

• Relativity Theory
• Quantum Mechanics
• Big Bang Theory

persistent noise discovered in 1965 that is caused by weak radiation from all directions in space

• Cosmic Background Radiation

• Interstellar Medium Noise
• Solar Radiation
• Galactic Background Radiation

Tags

NGSS.HS-ESS1-2

model that says the universe began as a fluctuation in a vacuum and expanded very rapidly for a fraction of a second before settling into a more orderly expansion

• Big Bang Theory
• Cyclic Model
• Inflationary model
• Steady State Theory

Tags

NGSS.HS-ESS1-2

a variable star that has a relationship between its luminosity and its pulsation period

• RR Lyrae variables

• Cepheid variables

• both

variable star that has periods of pulsations between 1.5 hours and 1 day and, on average, has the same luminosity

• RR Lyrae variables

• Cepheid variables

• both