Reflection: Answer as many as you like (at least 1).
What is something new you learned?
What is something that suprised you?
What questions do you have?
What would you like to learn more about?
What is the main reason we understand how stars and galaxies form?
What was the state of the universe before stars had formed?
What causes clumps of dark matter to attract gas?
We don't have a good definition of when to stop calling something "a cluster of stars" and start calling something "a galaxy."
The Hubble Space Telescope acts as a time machine because it allows us to see objects as they were when the light left them. What does this mean for our understanding of galaxies?
How many galaxies are there in the universe?
What has Hubble's observations revealed about the universe over billions of years?
What did Hubble discover in the "empty" areas of the sky?
What is the most common type of galaxy?
Which component of a spiral galaxy is at its center?
The stars in the disc are typically much younger than the ones in the halo and bulge.
Which type of galaxy is characterized by its oval shape and lack of central bulge?
What are elliptical galaxies typically composed of?
What type of galaxy lacks a unqiue shape?
What phenomenon can cause irregular galaxies to lose their distinct shapes?
What is the estimated age of the Milky Way galaxy?
What is significant about the habitable zone?
How long does it take for our solar system to complete one orbit around the center of the Milky Way?
What type of galaxy is the Milky Way?
What is galactic cannibalism?
What object is found in the center of the Milky Way?
What is the closest major galaxy to the Milky Way?
When will the Milky Way and Andromeda galaxies merge?
What objects in the center of the Milky Way and Andromeda galaxies produces enough gravitational force to mesh them together?
What type of galaxy would the Milky Way and Andromeda galaxies become once they collided?
What might happen to the stars during the collision?
When the 2 galaxies actually collide, what will have happened to the Earth by then?