Solar System #1
A measure of how circular an orbit is.
Eccentricity
a pure substance
element
step in the formation of a solar system where matter has formed large clumps not big enough to clear their orbital path
protoplanet
what a white dwarf is called after it stops radiating light
black dwarf
what is thought to form at the bottom of a black hole
singularity
A line that connects a planet to the sun sweeps out equal areas in equal times.
Kepler's 2nd Law
found in the nucleus
protons and neutrons
contracting, spinning ball of gas that is not experiencing nuclear fusion
protostar
object that has a gravitational pull so strong not even light can escape
black hole
model of universe formation governe by the gas laws
open
Point on Earth's orbit that is closest to the sun.
Perihelion
occurs in the core of a star
a large field of gas and dust in space
nebula
process that results in the formation of elements larger than Iron
Super Nova
area of dust and gas around a new star from which planets form
accretion disk
Planets travel on elliptical paths around the sun.
Kepler's 1st Law
states that matter cannot be created or destroyed
conservation of mass
another word for the outer planets
gas giants
object that forms at the end of a stars life that is 8-20x the size of the sun ends
neutron star
evidence that most galaxies are traveling away from us
red shift
Point on the Earth's orbit that is furthest from the sun.
Aphelion
The formation of new elements larger than hydrogen.
Nucleosynthesis
responsible for stripping the rocky planets of gas
solar wind
process that happens at the end of an average stars life
nova
set of stars that travel through space together
galaxy