They orbit the Kepler-62 star in the Constellation Lyra - 1, 200 light-years from Earth.
Alas, those wholesome conditions are still light-years away in most of the Middle East.
That planet had a radius 2.4 times that of Earth and is 600 light-years away.
They used it to detect methane in the atmosphere of a planet nearly 63 light-years away.
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The first, called Kepler-34b, orbits its two small stars in a system about 4, 900 light-years from Earth.
The planet orbits a star about half as big as our Sun, positioned some 9, 000 light-years away.
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The aircraft is light-years ahead of the current F-15 and F-16 in stealth capabilities, avionics and weapons systems.
The image above is of a nebula about 1, 000 light-years away, and definitely has some seasonally appropriate colors.
He then examined a picture taken by the Hubble space telescope of a galaxy several billion light-years away.
At a relatively close distance of 2.5 million light-years, Andromeda is very similar in size to our own Milky Way Galaxy.
Only the light from some faint galaxies has been detected beyond this burst - 100-300 million light-years further away.
This week, Rae returns with her second album, The Sea, and it's light-years ahead of what she'd done before.
The nearest habitable, Earth-sized planet could be just 13 light-years away, research suggests.
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The second, Kepler-35b, orbits a set of twin stars about 5, 400 light-years away.
These ridges are about 13, 000 to 16, 000 light-years long and 1, 000 light-years wide.
Mary Ann and I weren't just five years apart, we were light-years apart.
Steven Mandel trains his 7-inch telescope on a portion of the Veil Nebula, a cloud of gas 1, 600 light-years away.
They contain thousands to millions of stars packed into a region of space just a few tens of light-years across.
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Its age, and the finite speed of light, means no astronomer can look beyond a distance of 13.7 billion light-years.
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For all that it lasted four decades and ended less than a month ago, the colonel's era already seems light-years away.
The black hole is located in a globular cluster associated with a galaxy named NGC 4472, some 55 million light-years away.
BBC: NEWS | Science/Nature | Black hole found in ancient lair
The picture below shows the remnants of one such event -- called W49B -- that happened 26, 000 light-years away from Earth.
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The observations from the Chandra space telescope are the deepest X-ray images ever obtained, viewing events that are 10 billion light-years away.
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Ten billion light-years distant, Mingus will help shed light on so-called dark energy, the force that appears to be speeding up cosmic expansion.
It's only 20 light-years from Earth -- a lot closer than the newly discovered planets, though there has been some controversy about its existence.
It is about 129 light-years from Earth, so scientists weren't sure if Spitzer would be able to snap a picture of its debris disk.
Viewed from a distance of ten light-years, the sun's side-to-side wobble due to Jupiter causes its position to change by 1.6 thousandths of an arcsecond.
Specifically, it computed the evolution of a cubic volume measuring about 1 billion light-years on a side, a volume that would contain over a million galaxies.
To estimate the number of alien worlds, Dr. Cassan and his colleagues studied 100 million stars between 3, 000 and 25, 000 light-years from Earth with gravitational microlensing.
The nebula - which measures 1, 000 light-years across - owes its name to the arrangement of bright patches, which have been likened to the legs of a tarantula.
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