Chapter 15. Astrobiology

Question What part of the spectrum do we use to search for signs of water and carbon dioxide?

Z+yu6tEk/5stEPAI25dVx6EYA449kR2E+1/RrL+8UJtT9S68Xn83vk1XyTq+Yiz4jxPSeAcoAvUdKRHXxIPJMuryDv8= {"title":"gamma","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"31,14,323,119\"}]"} {"title":"xray","description":"Try again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"26,119,318,183\"}]"} {"title":"visible","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"25,179,317,219\"}]"} {"title":"infrared","description":"On other planets, like Mars, scientists tune to different portions of the infrared spectrum to find carbon dioxide and water.","type":"correct","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"26,222,318,290\"}]"} {"title":"microwaves","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"27,291,319,337\"}]"} {"title":"radiowaves","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"24,336,316,487\"}]"}

Question What part of the spectrum do we use to search for potential signals from civilizations of other planets?

Z+yu6tEk/5stEPAI25dVx6EYA449kR2E+1/RrL+8UJtT9S68Xn83vk1XyTq+Yiz4jxPSeAcoAvUdKRHXxIPJMuryDv8= {"title":"gamma","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"31,14,323,119\"}]"} {"title":"xray","description":"Try again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"26,119,318,183\"}]"} {"title":"visible","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"25,179,317,219\"}]"} {"title":"infrared","description":"Try again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"26,222,318,290\"}]"} {"title":"microwaves","description":"Try Again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"27,291,319,337\"}]"} {"title":"radiowaves","description":"Scientists are searching the skies for radio signals from alien civilizations. Radio signals can travel long distances without experiencing interference from interstellar medium--- and if they were looking for us, radio would be the way to go. We've been broadcasting radio signals into space for over half a century. ","type":"correct","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"24,336,316,487\"}]"}

Question Receiving a signal

OHNzftKDt5+ULrrAfRIy17dyGNVqpoHzCYD+Q/WngZjpwbHf0VQsb1OhuoEUF12pacUWvSi3YMaIDi7QNmzP9AORxUsr4L1M91fuCDbHVZecQafmTaKKgMy5tUH3vcekIScwLj+kMcvmr1Rad18j9Tjt0wRS3jnxLN+0D6a6H9k/m6Jt1KMdGgPzRqWjrJmzGPWpsrwZMWq0wts5rcRHGdPTxYZarIK39MvSyALXoTY= {"title":"water","description":"Water in the atmosphere blocks a signal at this frequency. Is there anything else that would block their signal?","type":"correct","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"168,78,419,145\"}]"} {"title":"oxygen","description":"Oxygen in the atmosphere blocks a signal at this frequency. Is there anything else that would block their signal?","type":"correct","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"486,179,688,270\"}]"} {"title":"1","description":"Try again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"96,275,231,366\"}]"} {"title":"2","description":"Try again.","type":"incorrect","color":"#ffffff","code":"[{\"shape\":\"rect\",\"coords\":\"90,178,93,179\"},{\"shape\":\"rect\",\"coords\":\"478,367,689,428\"}]"}