Speaking level b2 Tashkent 2020

 
WHAT WOULD ALIEN LIFE ACTUALLY LOOK LIKE? 
As we discover ever more planets orbiting other stars, and plan missions to potentially 
habitable moons of Saturn and Jupiter. Will we find life - and if we do, will we even recognise 
it? Our Universe could turn out to be a pretty wild place. Recent astronomical discoveries 
suggest that billions of Earth-like planets are dotted throughout our Galaxy, which is just one of 
billions of galaxies in the Universe. "Our best estimates are that one in four stars have a planet 
that is the same size and the same temperature as the Earth.

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Bepul tarqatish uchun 
11 
That's very high," says David Charbonneau, professor of astronomy at Harvard 
University, US. And many scientists now think there is life on at least some - if not many - of 
those planets and their moons. One of them is Dr Chris McKay, a planetary scientist at NASA's 
Ames Research Center, who says that we can assume that life is widespread based on "two 
simple facts" – chemical elements and oxygen. "If the origin of life is widespread, then complex 
life will be widespread," says the scientist. 

 
ON THE NOSE 
In the future, an artificial nose might be as simple as a patch that you wear on your skin 
like a plaster, or a wristband that changes colour when it detects the chemicals in your sweat, or 
it could be a smartwatch. It might even be a handheld electronic nose - an e-nose - tailored to 
sniff out the signature smell for the disease.
Prof Krishna Persaud, a chemoreception expert at the University of Manchester, has 
developed an e-nose that's about the size of an early mobile phone, and brings us a step closer to 
what has until now been science fiction. According to Persaud, we haven't quite managed to 
develop a tricorder like the one used by Star Trek's Dr McCoy yet, "but we are looking at a set of 
tools right now being developed by researchers around the world, which will help to transform 
medicine for the future," he says.