Galaxy Study guides, Class notes & Summaries

The cosmic calendar - a imaginary concept to examine the history of our planet compressed into one year-Carl Sagan, human civilzation doesn't come on the scene until almost the last few seconds. This made people realize how insignificant human society is on the grand scale of time and the imense universe especially in the human-centerd view of religions. planet - A large body in space that orbits a star and does not produce light of its own star - A ball of hot gas, primarily hydrogen and...

Astro 7N Exam 2 Questions and Answers | Verified Updated| Latest 2024. 1. A high-luminosity star ... A: is always at a larger distance than a low-luminosity star B: emits more light than a low-luminosity star C: is always redder than a star with a lower luminosity D: is at a lower temperature than a low-luminosity star E: is always at a smaller distance than a low-luminosity star 2. If a red giant appears the same brightness as a red main sequence star, which one is farther away? A:...

AU-astronomical unit Correct Answer-Earth's average distance from the sun. Used to describe distance within the solar system Light Year- ly Correct Answer-Distance light can travel. which is about 10 trillion km. Used to describe distance of stars and galaxies. measure of distance not time. Solar system Correct Answer-consists of sun,planets, and their moons; which is held together by a common center. Local Group Correct Answer-more than 70 galaxies put together galaxy clusters Corr...

Movie adaptation of Carl Sagans book where Jodi Foster travels through a worm hole - correct answer Contact In 1955 movie where pod people take over Santa Maria California - correct answer Invasion of the body snatchers This movie is widely known as the most accurate sci-fi movies today - correct answer Interstellar Screenshot - correct answer What is close encounters of the third kind Light emitted by a hot, dense body, where all wavelengths are present - correct answer What is a co...

Astronomy - Final Exam With Complete Solutions 100% Solved How are galaxies created? ️️One says that galaxies were born when vast clouds of gas and dust collapsed under their own gravitational pull, allowing stars to form. ... The other, which has gained strength in recent years, says the young universe contained many small "lumps" of matter, which clumped together to form galaxies. How was Hubble important to our understanding of galaxies? ️️he discovered the existence of ...

EAPS 105 Exam 1 HW Questions & Answers 2024 What lies in the center of the galaxy? a. a void, like the eye of a hurricane b. the oldest stars in the galaxy c. a supermassive black hole d. the home world of our galactic empire - ANSWER-c. a supermassive black hole Which of the following statements about the solar system are correct? a. It formed 4.6 billion years ago. b. At least one of the giant planets are formed of rock and metal like terrestrial planets. c. The orbits of the ma...

WGU C165 Unit 5: Earth & Sky 2023|24 QUESTIONS & ANSWERS Latest update Newton's Law of Universal Gravitation The law that says every object in the universe attracts every other object, and that the force is affected by mass and distance: the greater the mass of an object, the greater the attraction; the farther apart the objects, the weaker the attraction. Nebula a cloud of gas and dust in space Nuclear Fusion The process by which two or more small nuclei fuse to make a bigger nucleus...

Test Bank for Explorations: Introduction to Astronomy 10e 10th Edition by Thomas Arny, Stephen Schneider. Full Chapters test bank are included - Chapter 1 to 18 Preview: The Cosmic Landscape Chapter 1: The Cycles of the Sky Chapter 2: The Rise of Astronomy Essay 1: Backyard Astronomy Chapter 3: Gravity and Motion Chapter 4: Light and Atoms Essay 2: Special and General Relativity Chapter 5: Telescopes Chapter 6: Earth Chapter 7: The Moon and Tides Essay 3: Keeping Time Chapter 8: Th...

Space Exploration|Complete Questions with A+ Graded Answers main sequence a diagonal area on an H-R diagram that includes more than 90 percent of all stars white dwarf A small, hot, dim star that is the leftover center of an old star Luminosity the true brightness of an object light year the distance light travels in one year blueshifted the doppler shift toward shorter wavelengths of light from an approaching object Redshifted stars moving away from Earth Ne...

Lab 4 How Big is our Galaxy? ASTRO 102 1 Objective The objective of this lab was to introduce methods that astronomers use to estimate properties of astronomical objects using observations. 2 Introduction A variable star is a star whose brightness changes periodically. Variable stars are comprised of two categories, intrinsic and extrinsic variables. The luminosity of an intrinsic star changes, whereas only the apparent brightness of an extrinsic star changes due to changes in the amoun...