astronomers and stars

Question 1

Ptolemy

Answer 1

a Greek astronomer wrote a book that combined all of the ancient knowledge of astronomy that he could find

Question 2

Copernicus

Answer 2

polish astronomer published a new theory that would eventually revolutionize astronomy

Question 3

Brahe, Tycho

Answer 3

used several large tools to make the mos detailed astronomical observations that has been recorded so far

Question 4

Kepler, Johannes

Answer 4

after he died his assistant, Johannes Kepler, continued Brahe’s theory but he recognized how valuable Brahe’s data were.

Question 5

Galileo

Answer 5

one of the first people to use a telescope to observe objects in space, he discovered craters and mountains on the earths moon

Question 6

Newton, Isaac

Answer 6

showed that all four objects in the universe attract each other through gravitational force

Question 7

Hubble, Edwin

Answer 7

proved that other galaxies beyond the edge of the milky way

Question 8

Ursa, major

Answer 8

constellation that is most conspicuous of the northern constellation

Question 9

Ursa minor

Answer 9

constellation in the northern sky

Question 10

Orion

Answer 10

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

Question 11

Canis major

Answer 11

constellation in the S hemisphere close to Orion containing Sirius the brightest star in the sky

Question 12

Cassiopia

Answer 12

wife of king Cepheus who gave birth to Andromeda and is later changed into a constellation

Question 13

Red giant

Answer 13

star is a dying star in the last stages of stellar evolution

Question 14

White dwarf

Answer 14

stellar core remnant composed mostly of electron degenerate matter

Question 15

Main-sequence star

Answer 15

fusing hydrogen in its core and has a stable balance of outward pressure from core nuclear fusion

Question 16

Supernova

Answer 16

astronomical term for a star that explodes like crazy

Question 17

Black hole

Answer 17

region of space time exhibiting such strong gravitational effects that nothing can escape from inside

Question 18

Parallax

Answer 18

effect where by the postionion or direction of an object appears to differ when viewed from different positions

Question 19

Light-year

Answer 19

unit astronomical distance equal to distance that light travels in one year

Question 20

Polaris

Answer 20

commonly the north star is the brightest star in the constellation of Ursa. current northern pole star