Astronomers and Stars

Question 1

Almagest, a treatise in 13 books

Answer 1

Ptolemy

Question 2

a Renaissance-era mathematician and astronomer

Answer 2

Copernicus

Question 3

a Danish nobleman, astronomer, and writer known for his accurate and comprehensive astronomical and planetary observations

Answer 3

Brahe, Tycho

Question 4

a German mathematician, astronomer, and astrologer

Answer 4

Kepler, Johannes

Question 5

an Italian polymath

Answer 5

Galileo

Question 6

an English mathematician, astronomer, theologian, author and physicist who is widely recognised as one of the most influential scientists of all time, and a key figure in the scientific revolution

Answer 6

Newton, Isaac

Question 7

an American astronomer

Answer 7

Hubble, Edwin

Question 8

a constellation that is the most conspicuous of the northern constellations, is situated near the north pole of the heavens

Answer 8

Ursa major

Question 9

a constellation that includes the north pole of the heavens

Answer 9

Ursa minor

Question 10

prominent constellation located on the celestial equator and visible throughout the world

Answer 10

Orion

Question 11

a constellation in the southern celestial hemisphere

Answer 11

Canis major

Question 12

a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty

Answer 12

Cassiopeia

Question 13

a very large star of high luminosity and low surface temperature

Answer 13

Red Giant

Question 14

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

Answer 14

White dwarf (star)

Question 15

any star that is fusing hydrogen in its core and has a stable balance of outward pressure from core nuclear fusion and gravitational forces pushing inward

Answer 15

Main-sequence star

Question 16

a star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass

Answer 16

Supernova

Question 17

a region of space having a gravitational field so intense that no matter or radiation can escape

Answer 17

Black Hole

Question 18

the effect whereby the position or direction of an object appears to differ when viewed from different positions, through the viewfinder and the lens of a camera

Answer 18

Parallax

Question 19

a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 trillion miles)

Answer 19

Light-Year

Question 20

A star located at the end of the handle of the Little Dipper, in the constellation Ursa Minor, approximately 408 light years from Earth, and almost at the north celestial pole. Also called North Star

Answer 20

Polaris (star)