Post on 16-Apr-2017
SETI Search for Extra-Terrestrial Intelligence
6th Grade Science
What should we look for?
• Use Earth as a model!– Most life here is very simple bacteria– Complex life can communicate with radios.
Simple Life
• Again use Earth as model!–Goldilocks Conditions•VENUS is too hot for us•MARS is too cold for us•EARTH is just right– Liquid Water (between 0-100°C)
Simple Life
• Extreme Locations for Life on Earth– Deep Ocean (White Smokers)• Tube worms (464°C)
– Hot Springs• Extremophiles
– High acid or base– High Salt
Simple Life
• Where?–On Earth•Meteorites–ALH84001
Simple Life• Where?–Mars•Viking Landers–Nutrient Soup (added Mars Soil)
•Rovers (Spirit & Opportunity)–Drill into rocks
•Global surveyor–Look for water
Simple Life
• Europa (Jupiter’s Moon)– Ice surface with liquid core due to Jupiter’s gravity
• Titan (Saturn’s Moon)– Liquid hydrocarbon lakes (make methane)
• Outside solar system– Look for chemicals of life • Methane• CO2
Complex Life
• SETI– Allen Telescope Array
What has not been Found!
• Little Green Men• Alien UFO (Unidentified Flying Object)• Faces on Mars