Aliens where is the proof

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Nor did the telescopes trained on it find evidence of any of the by-products normally associated with outgassing, like water vapor or dust. As astronomers pored over the data, they excluded one theory after another.

By the time it reached our solar system, it had mostly melted away, like an ice cube on the sidewalk. It was the handiwork of an alien civilization. The second possibility, Loeb and Bialy suggested, was the more likely, since if the object was just a piece of alien junk, drifting through the galaxy, the odds of our having come across it would be absurdly low. Film companies vied to make a movie of his life.

Also not surprisingly, much of the attention was unflattering. Sutter, an astrophysicist at Ohio State University, wrote. Far from being deterred, Loeb doubled down. In another equation-packed paper, the pair argued that it was fantastical to imagine solid hydrogen floating around outer space. In it, he recounts the oft-told story of how Galileo was charged with heresy for asserting that Earth circled the sun. And the only way the object could be propelled by solar radiation is if it were extremely thin—no thicker than a millimetre—with a very low density and a comparatively large surface area.

Such an object would function as a sail—one powered by light, rather than by wind. The first planet to be found circling a sunlike star was spotted in by a pair of Swiss astronomers, Michel Mayor and Didier Queloz. Its host star, 51 Pegasi, was in the constellation Pegasus, and so the planet was formally dubbed 51 Pegasi b.

By a different naming convention, it became known as Dimidium. For their work, Mayor and Queloz were eventually awarded a Nobel Prize. The planet turned out to be very large, with a mass about a hundred and fifty times that of Earth. It was whipping around its star once every four days, which meant that it had to be relatively close to it and was probably very hot, with a surface temperature of as much as eighteen hundred degrees.

Mayor and Queloz had detected Dimidium by measuring its gravitational tug on 51 Pegasi. In , NASA launched the Kepler space telescope, which was designed to search for exoplanets using a different method.