Astr 1020 final - Study guides, Class notes & Summaries

ASTR 1020 FINAL EXAM

Which of the following is the smallest? a) 1 AU b) Size of a typical planet c) 1 light-month d) Size of a typical star - b) Size of a typical planet How are galaxies important to our existence? a) Without galaxies, the universe could not be expanding b) Without galaxies, there could not have been a big bang c) Galaxies provide the gravity that prevents us from falling off Earth d) Galaxies prevent planets from leaving their orbits around stars; e.g., our galaxy prevents Earth from lea...

ASTR 1020 FINAL ACTUAL EXAM COMPLETE ALL 150 QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) | GRADED A+ | LATEST 2024/2025 A main-sequence star of 3 solar masses has a radius of approximately 2.5 times the radius of our Sun. According to Newton's formula, what would happen to the gravitational force felt by an object on the surface of this 3-solar-mass star if the star's entire mass gradually collapsed to a singularity? Assume the object remains on the surface of the star thr...

The text presents a compilation of final exam questions and detailed answers related to the study of galaxies, stars, and the universe, focusing on gravitational interactions, stellar evolution, and cosmic phenomena. Key concepts include the movement of galaxies relative to the Milky Way, the formation and characteristics of different types of galaxies, star formation processes, and the implications of dark matter. The text also covers the dynamics of star clusters, the lifecycle of stars, and t...