Distances in Space

_____________ would be the best to use to measure the distance between galaxies

• Astronomical units

• Light seconds

• Light years

• Parsecs

If an object is 7.4 light years away from Earth, what does this tell you?

• It would take 7.4 minutes for the light to get to Earth.

• Traveling at the speed of light it takes 7.4 yrs to get to the earth.

• The object is very close to Earth.

• It would take 7.4 seconds for the light to get to earth.

What's wrong with Han Solo's claim of making "the Kessel Run in less than 12 parsecs"

• Even the Millennium Falcon can't travel that fast

• He should have used 'astronomical units'

• Parsec is a measure of distance, not time

• He should have used 'light seconds'

The stars we see in each constellation are very close to us.

• True
• False

A light year is approximately.....

• 59,987,812 kilometers

• 8,522,846,507 kilometers

• 9,460,730,472,581 kilometres

• 377,160,825,209,412,592 kilometers

_______________ would be the best unit to use to measure the distance between the our sun and Proxima Centauri (our nearest star neighbor).

• Astronomical units

• Light seconds

• Light years

This geometrically derived unit equals about 3.26 light years

• Astronomical Unit

• Light year

• Parsec

• Light second

If two stars are 100 light-years apart, what does that mean?

• It would take 100 years for a spaceship to travel between these two stars.

• It takes 100 years for light to travel from one star to the other.

• One of the stars formed 100 years before the other.

• The stars are 100 million kilometers from each other.

The distance that light can travel in a year is called....

• A light second

• A light minute

• A light month

• A light year

Which distance is the greatest?

• the distance across the Milky Way galaxy

• the distance to the nearest star cluster

• the distance across the solar system

• the distance to the nearest galaxy