Galaxy Composition

Topic Page

Questions

• What is the Large Magellanic Cloud?
• What are Magellanic clouds? How were they discovered?
• Are galaxies visible in the night sky?
• How were the Magellanic clouds formed?
• What are the Magellanic clouds composed of?
• What are accretion disks?
• How do the basic galaxy types differ in shape, stellar content, and interstellar matter?
• Did the bulge or disk of the galaxy form first? How is this determined?
• Why does the Milky Way Galaxy's nuclear bulge contain many red giants and supergiants as opposed to dwarfs and other stars?
• What is a galaxy's bulge?
• What is the oldest part of a galaxy?
• Which types of galaxies have a clearly defined disk component?
• What is an irregular galaxy?
• How does the composition between irregular, spiral, and elliptical galaxies compare?
• How are irregular galaxies classified?
• How are irregular galaxies created?
• How big are irregular galaxies?
• Where is intracluster medium found?
• What is intracluster medium?
• What is a supercluster?
• Why do astronomers theorize that most of the matter in galaxies and clusters of galaxies is dark matter?
• How are galaxies clusters and superclusters different?
• How are galaxies star clusters and nebulae different?
• Why do galaxies form clusters?
• Where are open clusters found in our galaxy?
• Compare and contrast the properties of open clusters and globular clusters. How are they similar? How are they different?
• What are the characteristics of an open cluster of stars?
• How big are open clusters?
• How many stars can be found in an average open cluster?
• What is a radio galaxy?
• Where is the Oort Cloud located and what do we believe comes from it?
• What is the difference between the Kuiper Belt and the Oort Cloud?
• If the Oort cloud extends half way to Alpha Centauri, wouldn't this mean that the Centauri system's cloud would intersect ours?
• Does the Oort cloud rotate? Or is it static?
• Does the Oort cloud exist? If so, why can't we see it?
• Are there planets in the Andromeda Galaxy? If so how many? Could life be sustainable there?
• What is zodiacal dust?
• What is the dust cloud in our solar system that will block out our sun light called?
• When can the zodiacal light be seen during the night?
• Can life form in Elliptical and Irregular galaxies?
• What does an elliptical galaxy contain?
• What is the evidence that suggests planetary systems are common in the universe?
• In what ways to extrasolar planetary systems differ from our own solar system?
• How many solar systems are in the Milky Way Galaxy?
• What are the hottest and coldest places in the solar system?
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• Question #f6e4c
• What is dark matter?