Astronomy

Question 1

Ptolemy

Answer 1

he gave detailed info on the planets and and sun in his 13 books

Question 2

Copernicus

Answer 2

he was known to be the first person to use the idea of a heliocentric solar system

Question 3

Brahe

Answer 3

he observed accurate planetary positions

Question 4

Kepler

Answer 4

he discovered the 3 laws of planetary movement

Question 5

Galileo

Answer 5

he discovered 4 of Jupiter’s moons

Question 6

Newton

Answer 6

he worked on the 3 theories of motion and gravity

Question 7

Hubble

Answer 7

he proved that cloud in the night sky were other galaxies

Question 8

Ursa Major

Answer 8

a constellation that is the most conspicuous of the northern constellations, it contains the Big dipper

Question 9

Ursa Minor

Answer 9

a northern constellation that includes the little dipper

Question 10

Orion

Answer 10

a constellation on the celestial equator and visible throughout the world

Question 11

Canis Major

Answer 11

a constellation close to Orion that represents one of his dogs

Question 12

Cassiopeia

Answer 12

a constellation in the northern sky, named after the vain queen, Cassiopeia

Question 13

Red Giant

Answer 13

a dying star in the last stages of stellar evolution

Question 14

White Dwarf

Answer 14

a very small and dense star that is typically the size of a planet

Question 15

Main-sequence Star

Answer 15

any star that fuses hydrogen in its core and has a balance of outward pressure and gravitational forces pushing inward

Question 16

Supernova

Answer 16

a star that increases in brightness due to an explosion

Question 17

Black Hole

Answer 17

a collapsed star that has an intense gravitational field.

Question 18

Parallax

Answer 18

the displacement of an object due to a change in the observer’s point of view

Question 19

Light Year

Answer 19

the distance light travels in a year

Question 20

Polaris

Answer 20

a star located at the end of the handle of the Little Dipper