In the search for life beyond Earth, astronomers should look for signs of pollution in the atmospheres of alien planets outside the Earth’s solar system, a new study says.
The next-generation James Webb Space Telescope, which is set to launch in 2018, could hunt for worlds harboring alien life by sniffing their atmospheres for chlorofluorocarbons (CFCs), greenhouse gases that destroy ozone in the Earth’s atmosphere. These chemicals could be detected on planets with atmospheres that are 10 times thicker than Earth’s, the researchers said.
Scientists already scan the atmospheres of alien worlds for traces of oxygen and methane, gases that typically coexist in the presence of life. But searching for signs of pollution elsewhere in the universe could yield clues about more-advanced alien civilizations, the researchers said.
Of course, to very advanced civilizations, Earth’s own greenhouse gases might signal a primitive world, the scientists said.
"We consider industrial pollution as a sign of intelligent life, but perhaps civilizations more advanced than us, with their own SETI programs, will consider pollution as a sign of unintelligent life since it’s not smart to contaminate your own air," study leader Henry Lin, a student at Harvard University, said in a statement.
seeing hot people on your dash
Glaucus atlanticus, the blue dragon (also called sea swallow and blue angel), is a species of small-sized blue sea slug. This tiny animal spends its life floating upside-down on the surface of the Pacific, Atlantic, or Indian Ocean thanks to an air bubble which it swallows and keeps inside its belly, going wherever the currents and the wind take it.
This cute-looking creature is actually an aggressive predator that feeds on organisms much larger than itself, including the most venomous ones. It also can give you a poison sting when picking one up barehanded.
Iconic Disney characters gender bended.
Ariel, Cruella, Maleficent, Pocahantas, Elsa, Ursula, Aurora, and Snow White as guys. Hades and Jack Frost as girls.
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JACK FROST IS NOT DISNEYYYYYYYY -rage-
IM SO SATISFIED
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