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"How efficient do you think are our methods of receiving radio-signals are-for possible detection of extra-terrestrial life? "
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Technology Improves Imaging of Exoplanets
Imaging Earth-like exoplanets is a daunting challenge because the dim starlight that such relatively small worlds reflect is easily overpowered by the glare of their far larger, brighter parent stars. Now two astrophysicists at JPL have devised new techniques that can overcome this glare, enabling future space telescopes to snap pictures of Earth-like exoplanets up to 10 billion times fainter than the stars they orbit.
Source: [Link]
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