The ________ created violent collisions into lumps of matter that eventually formed the planets.
New cards
2
gravitational inward
As hydrogen has stopped being fused, the ________ force causes the star to collapse.
New cards
3
giant cloud of dust
A nebula is a(n) ________ and gas in space.
New cards
4
Stars
________ are Formed in a nebula, a giant cloud of dust and gas (mainly hydrogen)
New cards
5
Plasma
________ is a state of matter in which atoms have broken down by heat.
New cards
6
Radiation
________ from the sun spits away lighter elements, creating solid planets.
New cards
7
Apparent brightness
________ refers to how bright a star appears to be from earth.
New cards
8
wavelength of light
Redshifting increases the ________.
New cards
9
Absolute brightness
________ refers to how bright a star is from the same distance.
New cards
10
galaxy
A(n) ________ is a huge collection of gas, dust, and billions of stars and their solar systems.
New cards
11
Planets
________ are born from clouds (nebula) of gas and dust that orbit new stars.
New cards
12
strong magnetic fields
They have ________, ejecting particles from their magnetic poles.
New cards
13
Cosmic Microwave Background
The ________ is the cooled remnant of the first light that could ever travel freely throughout the Universe.
New cards
14
Neutron stars
________ are extremely dense stars made of the collapsed inner core.
New cards
15
How do people measure distances in space
using light year calculations
New cards
16
How do we measure the brightness of a star?
absolute vs apparent brightness
New cards
17
Evidence for the big bang
redshift, and background cosmic microwave radiation
New cards
18
What is accretion?
Accretion is the process of gravity clumping chemical matter around a newly formed star together
New cards
19
What is plasma?
Plasma is a state of matter in which atoms have broken down by heat. This produces freely moving protons and electrons – a "soup" of charged particles.
Studied by 3 people
Note 
Flashcard (24)