18. An intelligent alien living on a planet in the solar system orbiting Alpha Centauri, the nearest star system to our Solar System in the Milky Way Galaxy, receives radio signals from Earth traveling at 186,421 miles/hour. The signal asks if the Alien likes McDonald Burgers. How long, in years, would it take for an Earthling to receive the answer back, Yes! (The distance from Earth to Alpha Centauri = 4.367 light years away, 1 light year = 6.0 x 10" miles, and 1 year = 365.2422 days)

18. An intelligent alien living on a planet in the solar system orbiting Alpha Centauri, the nearest star system to our Solar System in the Milky Way Galaxy, receives radio signals from Earth traveling at 186,421 miles/hour. The signal asks if the Alien likes McDonald Burgers. How long, in years, would it take for an Earthling to receive the answer back, Yes! (The distance from Earth to Alpha Centauri = 4.367 light years away, 1 light year = 6.0 x 10" miles, and 1 year = 365.2422 days)

Horizons: Exploring the Universe (MindTap Course List)

14th Edition

ISBN:9781305960961

Author:Michael A. Seeds, Dana Backman

Publisher:Michael A. Seeds, Dana Backman

Chapter20: Astrobiology: Life On Other Worlds

Section: Chapter Questions

Problem 7P

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