Search results
Study with Quizlet and memorize flashcards containing terms like Examine the spectra of the four unknown substances shown below. What can you conclude?, How was helium first discovered?, What star is the coolest? and more.
The light-year is defined to be the. a. time it takes for light to travel from the nearest star to the Earth. b. average distance between the Earth and the nearest star. c. distance light travels in one year in space. d. time it takes light to travel from the Sun to the Earth. Click the card to flip 👆. c. distance light travels in one year in space
A) a spherically shaped collection of stars including our solar system and about a dozen other solar systems, stretching about 4 light-years in diameter. B) a spiral galaxy with a disk about 100,000 light-years in diameter and containing between 100 billion and 1 trillion stars.
20 cze 2024 · Our solar system is located about 27000 light-years from the center of the galaxy, or about halfway out to the edge of the galaxy. Our solar system orbits about the galactic center in a nearly circular orbit, making one trip around every 230 million years.
Study with Quizlet and memorize flashcards containing terms like Earth is made mostly of metals and rocks. Where did this material come from? A) It was created by chemical reactions in interstellar space. B) It was made by our Sun. C) It was produced in the Big Bang. D) It was produced by nuclear fusion in stars.
Study with Quizlet and memorize flashcards containing terms like 1) The farthest galaxies that modern telescopes are capable of seeing are up to A) 10 million light-years away.
Study with Quizlet and memorize flashcards containing terms like Light year, Light travels at __________ miles per second or ________ million miles per hour, It takes ______ minutes for light to travel to earth and more.
