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Cygnus
Lyra

Alan Boss: I think we're on the verge of finding out just how many Earth-like planets there are in the universe.

You're listening to astronomer Alan Boss. He's hoping to get more answers about Earth-like planets from NASA's Kepler Mission, launched in March of 2009. [---1---]

Alan Boss: [---2---]

Boss said the universe could be crowded with rocky planets like Earth — some possibly with water, and even life.

Alan Boss: [---3---]

Boss bases his hunch on the fact that for nearby sun-like stars, about a third have turned up what are called 'super-Earths', planets five to ten times more massive than Earth.

Alan Boss: [---4---]

As we look up to the night sky, said Bass, nearly every star we see might have an Earth-like world, 100 billion in our galaxy alone. His new book is called The Crowded Universe.

I'm Jorge Salazar.ES is a clear voice for science. We’re at

【视听版科学小组荣誉出品】
Boss said Kepler is like a big digital camera attached to a telescope in space. It will be staring at 100,000 stars in the field of the constellations Cygnus and Lyra for roughly three and a half years looking for the periodic dimming of those stars that are caused by Earth-like planets. There are already clear indications that such Earth-like planets were going to be quite common — that is, Earth-like planets probably occur around essentially every solar-type star, or very close to that. We're probably going to find just hordes and hordes of more normal, terrestrial Earth-like planets.