Life Cycle of Stars
Inside of a nebula, cold, dense regions of gas nd dust are drawn together by ______________.
Gravity
Has no particular shape; usually are formed when one galaxy collides with another
Irregular Galaxy
Says that the universe probably began about 13.7 billion years ago with an enormous explosion
Big Bang Theory
Mass
A large cloud of gas and dust in interstellar space; the location of star formation
Nebula
These are extremely dense and small and composed mostly of neutrons.
Neutron Stars
This is the brightest type of galaxy in the universe thanks to the bright young stars that it has.
Spiral Galaxy
Nuclear fusion takes __________ atoms to make ________.
Hydrogen, Helium
Massive stars have __________ life spans than average/low mass stars.
Shorter
Average kinetic energy of all the particles in a material
Temperature
This is the shed outer layer of a low/average mass star.
Planetary Nebula
The most common galaxy that is mostly made up of older yellow and red stars.
Elliptical Galaxy
What does the galaxy do that scientist use as reason that the Big Bang Theory happend?
It expands.
What do scientists use to determine the temperature of a star?
Color
The intensity or brightness of light from a celestial body.
Luminosity
These stars are among the largest stars in the universe but have a cool surface.
Red Supergiants
The name of our galaxy is...
Milky Way Galaxy
What are the streaming arcs of millions of stars that swirl around the center of a spiral-shapend galaxy?
Spiral Arms
What is the merging of hydrogen elements into helium that releases immense energy?
Nuclear Fusion
All space and the matter space contains
Universe
This occurs after a red supergiant becomes unstable leaving behind a black hole or a neutron star.
Supernova
Light travels in the form of __________, which is how we can determine the direction an object is moving.
Waves
What is the change in wavelength that allows us to determine whether an object is moving toward us or away from us?
Red Shift
What is the TRUE brightness of a star measured at a standard distanse of 32.6 light years?
Absolute Magnitude
The distance that light travels in one year
Light Year