Slide 1 Slide 2 Galaxies GALAXIES Slide 3 Stars are not randomly sprinkled throughout the universe. Most astronomers agree that there are about 100 billion galaxies in the…

Slide 1 Review: The life of Stars Slide 2 Variable Stars Eclipsing binaries (stars do not change physically, only their relative position changes) Nova (two stars “collaborating”…

What is a galaxy? A galaxy is a system containing millions or even billions of stars. We estimate that there are 50 billion to 100 billion galaxies in the observable universe.…

Review: The life of Stars Variable Stars Eclipsing binaries (stars do not change physically, only their relative position changes) Nova (two stars “collaborating” to…

Section 3: The Universe âGaining a better understanding of the universe gives us more insight into the possible origin of everything around usâ Galaxies Galaxy: huge collection…

Section 3: The Universe âGaining a better understanding of the universe gives us more insight into the possible origin of everything around usâ Galaxies Galaxy: huge collection…

Review: The life of Stars Activity Evolution of Stars Please work in groups of 3-5 Hand in one worksheet per group with all the group members’ names on Variable Stars Eclipsing…

The Universe and Galaxies Glencoe Ch.26 Sec. 3: pages 831-835 I. What is the universe? universe - sum of all matter and energy that ever has, does, and ever will exist everything…

THE FORMATION OF THE SOLAR SYSTEM Its all about gravity Gravity can set the particles and dust in a nebula into motion The core of a young star (protostar) acts as an anchor…

Variable Stars & The Milky Way Variable Stars Eclipsing binaries (stars do not change physically, only their relative position changes) Nova (two stars “collaborating”…