The renowned physicist enjoyed the sensation of weightlessness while 24,000 feet over the Atlantic
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What are those burning questions about the cosmos that still baffle astronomers today?
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On Star Wars day, we take a look at the science behind the series' most popular spacecraft and the force fields it flies through
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The moon's closest approach to earth will coincide with a perfectly full moon
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Get a sneak peak at the new project that will search for mysterious cosmic energies that drive our universe
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With the spacecraft poised to leave our solar system, the writer who helped compile the time capsules they carry reflects on our foray into outer space
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New data show that nearly 35 years after their launches, NASA's Voyager probes are now at the outermost reaches of the solar system
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A group of big-name tech billionaires wants to open up a new frontier in space--mining space rocks
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From a whale song to a kiss, the time capsule sent into space in 1977 had some interesting contents
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Earlier this week, a NASA telescope captured one of the most stunning solar flares in years
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A new survey of a slice of the distant reaches of the universe reveals 200,000 galaxies
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Saturn's Enceladus is spurting water vapor, organic material and salt—a microbe-friendly composition
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A new study finds that a strong solar storm could disable satellites for a decade
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A mass of debris from satellites and space missions is orbiting our planet—and it may be growing all the time
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Comets dive into the sun frequently, but previous ones had been too small and dim to be seen against the glaring backdrop
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Students in England concluded that the Star Wars space station could easily have destroyed an Earth-like planet
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Mount Everest is a just a peewee when compared with such giants as Olympus Mons on Mars
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The star-forming region Sharpless 2-106 bears a certain resemblance, particularly during this time of year
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An astronomer finds that depictions of the Moon on Christmas cards, wrapping paper and books is often wrong
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