Over the last few years, astronomers have discovered thousands of planets outside the Solar System, which leads us to believe that there may be exist many hidden worlds. Nick Siegler, director of NASA, said that more than once they have become a question: Is there life in other planets ?, the probability increase, since there are many planets and it may be that one is a twin of the Earth.
Sara Seager, a scientist that searching for life in other planets, believes the key is to examine the atmospheres of alien worlds.Is discovered a device as a flower called stellar umbrella to help the search for new lives. This umbrella is designed to block the starlight, allowing the telescope to avoid the glare of the planets and reveal signs of extra terrestrial life. This umbrella it is 10 billion times brighter than a planet the size of Earth.They want to study the gases and chemicals from other planets to see their composition and whether it could breathe these gases, because you can not see with sight the planet, for fault brightness of light.
Astronomers have already smelled some planets, because when a planet passes in front of a star, the starlight penetrates the gaseous layer enveloping the planet. The molecules in the atmosphere absorb specific wavelengths of light, depending the chemical. By measuring which wavelengths are absorbed, astronomers can identify the gases.
If all goes well the NASA wants to throw in 2026 the first stellar umbrella and also a space telescope equipped with a chronograph that blocks starlight from inside the telescope, while it is now focused on finding Earth's twin.
This article and all whose theme the future are very interesting because they explain anecdotes about the future, as this article who want to build a stellar umbrella to identify signs of alien life on other planets.
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