Question 1

A scientist who studies the stars and other objects in the sky

Accepted Answer

astronomer

Question 2

The theory that the universe originated in a huge explosion that released all matter and energy.

Accepted Answer

Big Bang Theory

Question 3

a star system with two stars

Accepted Answer

binary star

Question 4

dense objects with gravity so strong that not even light can escape their surface

Accepted Answer

black holes

Question 5

mass/volume

Accepted Answer

density

Question 6

a star system in which one star periodically blocks the light from another

Accepted Answer

eclipsing binary

Question 7

person whom Hubble telescope is named after. he first classified galaxies by shape.

Accepted Answer

Edwin Hubble

Question 8

huge galaxy that is round or oval in shape

Accepted Answer

Elliptical Galaxy

Question 9

Creation of energy by joining the nuclei of two hydrogen atoms to form helium.

Accepted Answer

Fusion

Question 10

galaxies that do not have regular shapes

Accepted Answer

irregular galaxies

Question 11

A measure of the amount of matter in an object

Accepted Answer

Mass

Question 12

A large cloud of dust and gas in space

Accepted Answer

nebula

Question 13

the small, dense remains of a high-mass star after a supernova

Accepted Answer

neutron star

Question 14

A contracting cloud of gas and dust; the earliest stage of a star's life

Accepted Answer

protostar

Question 15

spinning neutron stars

Accepted Answer

pulsars

Question 16

An enormously bright, distant galaxy with a giant black hole at its center

Accepted Answer

quasars

Question 17

*Big Bang Theory:

Accepted Answer

Solar System Formation

Question 18

See image

Accepted Answer

-the explosion of dense matter that, according to current cosmological theories, marked the origin of the universe

Question 19

a galaxy whose arms curve outward in a pinwheel pattern

Accepted Answer

spiral galaxy

Question 20

A group of two or more stars held together by gravity

Accepted Answer

star system

Question 21

the brilliant explosion of a dying supergiant star

Accepted Answer

supernova

Question 22

A small, hot, dim star that is the leftover center of an old star

Accepted Answer

white dwarf

Question 23

The actual brightness of a star

Accepted Answer

absolute magnitude

Question 24

the brightness of a star as seen from Earth

Accepted Answer

apparent magnitude

Question 25

A lens that is thinner in the center than at the edges

Accepted Answer

concave lens

Question 26

A lens that is thicker in the middle than at the edges

Accepted Answer

convex lens

Question 27

a group of stars that form a pattern

Accepted Answer

consellation

Question 28

a form of energy that exhibits wavelike behavior as it travels through space

Accepted Answer

electromagnetic radiation

Question 29

A collection of stars, dust, and gas bound together by gravity

Accepted Answer

galaxy

Question 30

Cool giant stars above main-sequence stars on the H-R diagram.

Accepted Answer

giant stars

Question 31

a graph relating the surface temperatures and absolute brightness of stars

Accepted Answer

Hertzsprung-Russell diagram

Question 32

the distance light travels in one year

Accepted Answer

light year

Question 33

the location on the H-R diagram where most stars lie

Accepted Answer

main sequence

Question 34

are the remains of high-mass stars after a supernova

Accepted Answer

neutron stars

Question 35

a building designed for observing the stars and planets

Accepted Answer

observatory

Question 36

A device used to detect radio waves from objects in space

Accepted Answer

radio telescope

Question 37

a telescope in which a mirror is used to collect and focus light.

Accepted Answer

reflecting telescope

Question 38

A telescope that uses convex lenses to gather and focus light

Accepted Answer

refracting telescope

Question 39

a device that breaks light into colors and produces an image of the resulting spectrum

Accepted Answer

Spectrograph

Question 40

colored band produced when a beam of light passes through a prism

Accepted Answer

spectrum

Question 41

size, mass, temp, and density

Accepted Answer

star classification

Question 42

All of space and everything in it

Accepted Answer

universe

Question 43

electromagnetic waves that you can see

Accepted Answer

visible light

Question 44

The distance between two corresponding parts of a wave

Accepted Answer

Wavelength

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