Aristarchus - Study guides, Class notes & Summaries

Law, Theory, Hypothesis Hypothesis: educated guess with observation. -WHY Theory: summarizes hypothesis by testing. - WHY Law: explains observations - HOW Singularity an area in space-time where gravitational force is so high, all known laws of physics break down. Evidence of Big Bang - Three Pillars of Proof 1. Hubble's Law 2. characteristics of cosmic microwave background radiation 3. abundance of light elements 1. Hubbles Law - there are many galaxies - the univ...

Astronomy Exam Review With 100% Correct Solutions

PCC Astronomy Exam #1 Review Questions and Answers You are on a camping trip, far away from city lights. You look up into the dark night sky, and see stars, some brighter, some dimmer. All the stars you see with your unaided eye are a. in our solar system b. equally close to the Sun c. in the Milky Way Galaxy d. outside the universe e. just reflections of the Sun from a shiny surface beyond Pluto c. in the milky way galaxy The Astronomical Unit (AU) as defined by astronomers is ...

Astronomy 101 Final Exam Questions with Complete Solutions The ancient Greeks identified 7 objects that change their location night-to-night relative to the background, "fixed" stars of the celestial sphere. They dubbed these objects the "wanderers". Which one of the "wanderers" wanders the most (i.e., changes its position the most from one night to the next) relative to the fixed stars of the celestial sphere? - CORRECT ANSWER The moon (has the fastest apparent motion in the sky,...

ASTRONOMY MIDTERM EXAM GUIDE YEAR 2022 Chapter 1: (1-34) ● The present day search for like in the universe differs from the ancient speculations is an important way: ○ while ancient people could do little more than guess about the possibility of finding life elsewhere, we can now study this possibility with the powerful methods of modern science // The ancient debate about life beyond Earth ● Scholars in ancient Greece debating over whether there was life beyond Earth tells us ...

ASTRONOMY 2021/2022 | Astro Midterm Exam Guide 2022. The present day search for like in the universe differs from the ancient speculations is an important way: ○ while ancient people could do little more than guess about the possibility of finding life elsewhere, we can now study this possibility with the powerful methods of modern science // The ancient debate about life beyond Earth ● Scholars in ancient Greece debating over whether there was life beyond Earth tells us a major c...

this document shows you the brief history of understanding astronomy, showing its scientists and their old theories. Aristarchus, Copernicus and others.

Astronomy And Space Science: Stellar Astronomy Scientific Thought: In Context COPYRIGHT 2009 Gale Astronomy and Space Science: Stellar Astronomy Introduction Stellar astronomy is the study of the sun and the stars: what they are, how they move, and how they are born, live, and die. The major challenge of this field is the staggering distance to even the closest stars. Scientists had great difficulty understanding stars without being able to touch them and experiment upon them. This ...

Maximum number of solar eclipses that can be seen somewhere on the surface of the Earth during the course of one year A. 1 B. 2 C. 3 D. 4 E. 5 correct answers Three The sidereal period of a celestial body is the time it takes that body to return to the same position on the celestial sphere with respect to the A. Sun B. Vernal Equinox C. zenith D. ecliptic E. Stars correct answers Stars What was the name of the person who successfully determined the size of the Earth in the 3rd c...

HIWD 370 Exam 1 questions and answers graded A+ 2024/2025