Astronomers find planets so close they 'see' each other in night sky | Repost
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"Unbelievable but true: Astronomers have discovered two planets so close to each other each can be seen in the other's night sky, just like a moon.
Researchers said the two planets are just 1.9 million km of each other, according to an article posted on Space.com.
"This is unprecedented.... They are as different in density as Earth and Saturn (the highest and lowest density planets in our solar system), yet they are (20) times closer than any pair of planets in our solar system," Space.com quoted co-lead author Eric Agol of the University of Washington as saying.
He was referring to planets Kepler-36b and c, which are 1,200 light-years from Earth and which researchers described as an unprecedented find."
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