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When we find life, how will we know? When we analyze light shot by a star through the atmosphere of a distant planet—a technique known as spectroscopy—the effect looks like a bar code. The slices missing from the light spectrum tell us which chemicals or gases are present in the alien atmosphere. One pattern of black gaps might indicate methane, another, oxygen. Seeing those together could be a strong argument for the presence of life. Or we might read a bar code that shows the burning of hydroc…
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I will tell you a little about Sri Lanka. I think you should also know about it..... Sri Lanka is celebrating its 75th Independence Day. We gained independence in 1948. After independence, another war started, it is called civil war. The civil war was fought in Sri lanka from 1983 to 2009. Beginning on 23 July 1983, there was an intermittent insurgency the government by the Velupillai Prabhakaran-led Liberation Tigers Of Tamil Eelam (LTTE, also known as the Tamil Tigers). The LTTE fought to crea…
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