more words

Question 1

constellation

Answer 1

groups of stars named after characters in stories, animals, and even tools

Question 2

radio telescope

Answer 2

collects and amplifies radio waves

Question 3

light-year

Answer 3

is the distance light travels in one year

Question 4

spectroscope

Answer 4

uses a prism or diffraction grating to separate light into its component wavelenghths

Question 5

nebula

Answer 5

stars form from a large cloud of gas, ice, and dust

Question 6

main sequence

Answer 6

include the broad band of stars from the hot, bright stars in the upper left corner of the diagram to the cool dim stars in the lower right corner

Question 7

giant star

Answer 7

as equilibrium ends, the stars core contracts, the temperature increases, and the star evolves

Question 8

white dwarf

Answer 8

forms as the core of a giant star no longer supports fusion and the stars outer layers escape into space, leaving a hot dense core

Question 9

supernova

Answer 9

is a gigantic explosion in which the temperature within the collapsing star is 10 billion K and the atomic nuclei in the core split into neutrons and protons

Question 10

neutron star

Answer 10

when the star explodes, it leaves behind a ball of neutrons

Question 11

black hole

Answer 11

an area in space that is so dense that nothing can escape its pull of gravity

Question 12

photosphere

Answer 12

the layer of the sun that emits light into space

Question 13

sunspots

Answer 13

dark, cool, areas in the photosphere where the suns magnetic field has weakened