How can we help?

You can also find more resources in our Help Center.

Chapter 25: Beond Our Solar System

25.1 - Properties of stars 25.2 - Stellar Evolution
STUDY
PLAY
Constellation
A group of stars that form a pattern in the sky.
Binary Star
Stars used to determine the star property most difficult to calculate - its mass.
Light Year
light distance travels in one year (9.5 trillion km)
Apparent Magnitude
...