Astro 1 - Study guides, Class notes & Summaries

What is a light year? Answer distance that light travels in 1 year 2. What is the closest star to Earth besides the Sun? (4.2 ly away) Answer proximacentauri 3. What is the age of the universe? Answer 14 billion years 4. What is our cosmic address?What is the Local Group? Answer Earth, solar system,milky way galaxy, local group, local supercluster 5. Order of planets in our solar system

Astro 1 PSU Final Exam Real exam questions and answers latest update

ASTRO 102 - FINAL EXAM

ASTRO 102 Midterm 1 (UMich) Exam Questions & Answers 2023/2024 Milkyway contains ___ stars - ANSWER-100 billion Local Group - ANSWER-about 40 galaxies in galaxy cluster Superclusters - ANSWER-clusters of galaxy clusters 1 AU - ANSWER-earth's average distance from sun Light Year - ANSWER-distance light can travel in one year (9.46 tril km) Observable Universe - ANSWER-14 billion light years Big Bang - ANSWER-happened 14 bill years ago, avg. distance between galaxies increa...

ASTRO 1 FINAL EXAM PSU 2024 QUESTIONS AND ANSWERS

What are the characteristics of disk stars (yellow) of the Milky Way Galaxy? - High mass stars, the Sun, youngest stars, and stars that all orbit in nearly the same plane What are the characteristics of halo stars (green) of the Milky Way Galaxy? - Globular clusters, oldest stars, stars whose orbits can be inclined at any angle, and stars with smallest abundance of heavy elements. What are the characteristics of spiral galaxies? - They contain abundant clouds of cool gas and dust, are rare...

Astro 1 Exam 1 PSU Real exam questions and answers latest update

Astro 102 Final Exam Ultimate Study Guide | 100% Correct Answers | Verified | Latest 2024 Version

If a planet is seeing its moon in the new phase right now, in what phase would the planet appear to be when viewed from its moon? - full planet What is the reason for the seasons on earth - earth is tilted with respect to the sun by about 23.5 degrees As compared to a cool star a hotter star emits - shorter wavelength, higher frequency, bluer color at approximately what time does the third quarter moon rise - midnight the electrons in a cloud of hydrogen gas are making the transition from ...

Astro 102 Final Sets Questions With 100% Correct Answers | Latest Update What is the main reason that astronomers have devoted many years of effort to determining the rotation curve for the Milky Way galaxy - ANSWER : The rotation curve can be used to help us determine the distribution of the mass in the galaxy How does the diameter of the disk of the Milky Way compare to its thickness? - ANSWER : The diameter is about 100 times greater than its thickness The most common form...