EBK LIFE IN THE UNIVERSE
4th Edition
ISBN: 8220101460417
Author: SHOSTAK
Publisher: YUZU
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Textbook Question
Chapter 1, Problem 11TYU
An extrasolar planet is (a) a planet that is larger than our Sun; (b) a planet that orbits a star other than our Sun; (c) a planet located in another galaxy.
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Chapter 1 Solutions
EBK LIFE IN THE UNIVERSE
Ch. 1 - Why are scientists interested in the possibility...Ch. 1 - People have long been interested in life beyond...Ch. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - What do we mean by a habitable world? Does a...Ch. 1 - What do we mean by the universality of physics and...Ch. 1 - Besides Earth, what worlds in our solar system...Ch. 1 - Prob. 8RQCh. 1 - Prob. 9RQCh. 1 - What do we mean by astrobiology? What are the...
Ch. 1 - An extrasolar planet is (a) a planet that is...Ch. 1 - A habitable planet is (a) a planet that has oceans...Ch. 1 - Prob. 13TYUCh. 1 - Prob. 14TYUCh. 1 - The correct order for the eight official planets...Ch. 1 - Today, the research known as SETI is conducted...Ch. 1 - Prob. 17TYUCh. 1 - Scientists today are interested in searching for...Ch. 1 - Based on current evidence, the object in our solar...Ch. 1 - Prob. 20TYUCh. 1 - Universal Laws. Briefly discuss how the idea that...Ch. 1 - The Science of Astrobiology. The study of...Ch. 1 - Conducting the Search. Given the large number of...Ch. 1 - Funding for Astrobiology. Imagine that you are a...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Suppose astronomers discover a radio message from a civilization whose planet orbits a star 35 lightyears away. Their message encourages us to send a radio answer, which we decide to do. Suppose our governing bodies take 2 years to decide whether and how to answer. When our answer arrives there, their governing bodies also take two of our years to frame an answer to us. How long after we get their first message can we hope to get their reply to ours? (A question for further thinking: Once communication gets going, should we continue to wait for a reply before we send the next message?)arrow_forwardWhy is traveling between the stars (by creatures like us) difficult?arrow_forwardConstruct a timeline for the universe and indicate when various significant events occurred, from the beginning of the expansion to the formation of the Sun to the appearance of humans on Earth.arrow_forward
- If all distant galaxies are expanding away from us, does this mean we’re at the center of the universe?arrow_forwardBy the term universe, astronomers mean: The system of 200 to 400 billion stars, of which the sun is one. The collection of several dozen galaxies, of which the Milky Way is one. Everything that we can observe. The realm inside the atom.arrow_forwardwhy does space have zero gravity?arrow_forward
- Astronomers frequently say that “there are more stars in the universe than there are grains of sand on all the beaches on the earth”. Given that a typical grain of sand is about 0.5 – 1.0 mm in diameter, estimate the number of grains of sand on all the earth’s beaches. The diameter of the Earth is 12,742 km.arrow_forwardone hundred milli- (100 times one one-thousandth): 102 ✕ 10−3 = 10(2 + [−3]) = 10(2 − 3) = 10−1 = 0.1 (100 ÷ 1,000 = 0.1) one hundred micro- (100 times one one-millionth): 102 ✕ 10−6 = 10(2 + [−6]) = 10(2 − 6) = 10−4 How do we write one hundred nano- (100 times one-billionth)? 102 ✕ 10−9 = 10 We write ten micrometers as follows. 10 ✕ 10−6 m = 10−5 m How do we write ten nanoseconds? 10 ✕ 10−9 s = 10 sarrow_forwardWhen was universe was createdarrow_forward
- Our solar system orbits the center of the Milky Way galaxy in about 200 million years. If there were no dark matter in our galaxy, this periodwould beA. Longer.B. The same.C. Shorter.arrow_forwardHow many times longer than the length of recorded history is the age of the universe? I was also given that the length of recorded history is 10E11 s, and that the age of the universe is 10E18 s. But, when putting 10E18/10E11 = 10E7, I get the wrong answer.arrow_forwardWhat is 4D spacetime?arrow_forward
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