Astronomy

Question 1

Ecliptic

Answer 1

Plane of earth orbit around the sun: a line through the 12 zodiac constellations.

Question 2

Precession

Answer 2

Earth’s spin axis is not fixed, but sweeps out a conical section of space over 25,800 years

Question 3

Declination

Answer 3

Up and down in degrees

Question 4

Ascension

Answer 4

Left and right in degrees

Question 5

Parallax

Answer 5

Is the only direct measurement we have for nearby objects within a few hundred light-years distance

Question 6

Light year

Answer 6

(For measuring distances) A light year is the distance a bean of light travels through the vacuum of space in one year

Question 7

Parsec

Answer 7

Parallax arc second

Question 8

Luminosity

Answer 8

Amount of radiation produced by the source

Question 9

Brightness

Answer 9

Amount of radiation that we receive

Question 10

The Hubble Constant

Answer 10

Velocity = Hubble constant X distance. The Hubble constant reflects the rate at which the Universe is expanding

Question 11

Chromosphere

Answer 11

The sun “atmosphere”

Question 12

Solar Prominences

Answer 12

High density blasts of plasma