The Big Bang Theory
The universe began...
13.8 Billion Years Ago
EMR is...
energy that travels through space as waves
A spectrum is...
a display of light separated into its different wavelengths or colors
A galaxy is...
a massive collection of Stars, Gas, Dust, Planets, & Dark matter held together by gravity
Made up of...
Hydrogen & Helium
The three pieces of evidence for the Big Bang...
CMB, Abundance of Light Elements, & Redshift/Expanding Universe
All forms of this are EMR
Light
Every element produces a unique pattern of spectral lines called...
spectral fingerprint
Three main galaxy types are...
Spiral, Elliptical, Irregular
The longest stage of a star's life
Main Sequence
CMB is described as...
Comsic Microwave Background Radiation (CMB)
A faint glow fills the universe.
It is leftover energy from the early universe.
These are types of EMR
Radio Waves, Microwaves, Infrared, Visible Light, Ultraviolet, X-Radiation, Gamma Rays
This separates light into spectra
Spectroscope
Star formation in spiral galaxies
Enrich future stars and planets
Supernova
Redshift VS Blueshift
R = Away
B = Closer
Longer vs Shorter wavelength
L = Lower frequency & energy
S = Higher frequency & energy
Spectra are used to show...
What elements are present
How much of each element exists
Temperature of the star
Can look like a glowing ball of light
Elliptical Galaxy
Occurs when smaller atomic nuclei combine to form larger nuclei
The two nuclei that formed in the first few minutes of the Big Bang...
Hydrogen & Helium
Infrared helps astronomers reveal...
cool dust and star-forming regions
Three types of spectra defined
Continuous - Shows all colors without gaps, Produced by hot, dense objects.
Emission - Bright colored lines on a dark background, Produced by excited gases
Absorption - Dark lines crossing a continuous spectrum, Produced when light passes through cooler gas.
Often rich in gas and dust
Average Mass vs Massive stars lifecycle
Average:
Massive: