astronomy

Question 1

Ptolemy

Answer 1

believed that the earth was the center of the universe

Question 2

Copernicus

Answer 2

believed that the sun was the center of the universe

Question 3

Brahe

Answer 3

recorded very precise observations of the planets and stars

Question 4

Kepler

Answer 4

used Brahe’s work to determine that all the planets revolve around the sun in elliptical orbits

Question 5

Galileo

Answer 5

used a telescope to make important discoveries about the moon and sun

Question 6

Newton

Answer 6

discovered that all objects in universe attract each other through gravitational force

Question 7

Hubble

Answer 7

proved that other galaxies exist beyond the milky way

Question 8

Ursa Major

Answer 8

northern star

Question 9

Ursa Minor

Answer 9

little bear

Question 10

Orion

Answer 10

Orion is a prominent constellation located on the celestial equator

Question 11

Canis Major

Answer 11

Canis Major is a constellation in the southern celestial hemisphere

Question 12

Cassiopeia

Answer 12

Cassiopeia is a constellation in the northern sky

Question 13

Red Giant

Answer 13

dying star

Question 14

White Dwarf

Answer 14

a small very dense star

Question 15

Main-sequence star

Answer 15

fuse hydrogen atoms

Question 16

Supernova

Answer 16

a star that suddenly increases greatly in brightness

Question 17

Black hole

Answer 17

A black hole is a region of spacetime exhibiting

Question 18

Parallax

Answer 18

Parallax is a displacement or difference in the apparent position of an object viewed along

Question 19

Light-Year

Answer 19

The light-year is a unit of length used to express astronomical distances

Question 20

Polaris (the star)

Answer 20

is the brightest star in the constellation of Ursa Minor