8th Grade SSA Vocab Review Space Part 1

Front

True brightness of an object.

Back

absolute brightness

Front

A small, rocky object orbiting the Sun.

Back

asteroid

Front

Avg. distance from Earth to Sun: 150M km.

Back

astronomical unit

Front

Point around which a large body spins.

Back

axis

Front

A small, rocky, icy object orbiting the Sun.

Back

comet

Front

Celestial event when the Moon is between Earth and Sun.

Back

solar eclipse

Front

Celestial event when the Moon enters Earth's shadow.

Back

lunar eclipse

Front

A collection of stars, gas, and dust.

Back

galaxy

Front

Force holding planets in orbit and causing rotation.

Back

gravity

Front

Unit of measurement outside the solar system; distance light travels in a year.

Back

light-year