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It is often suggested that alien life could have reached Earth on a comet, but what about the other way around ?
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Scientists have identified the oldest material ever to make it onto our planet - and it even predates the Sun.
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If successful, the mission will be the first ever to remove a piece of space junk from Earth's orbit.
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Astronomers have discovered a huge planet orbiting the burnt-out husk of a star that was once like the Sun.
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This large glowing object was spotted moving across the sky while intersecting the path of a passing airplane.
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A passenger who sat near Cooper during his infamous plane heist has spoken out about his experience.
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It turns out that planets could orbit a black hole in much the same way as our own planet orbits the Sun.
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A conspiracy theorist who had been filming a plane's vapor trail also managed to pick up a strange object in the sky.
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An aircraft designed to survive a nuclear apocalypse recently suffered a rather unfortunate mishap.
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A new paper has suggested that we may have no choice but to spread microorganisms to the Red Planet.
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NASA's chief scientist Dr Jim Green is optimistic that the next rovers to visit Mars will find evidence of alien life.
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The undiscovered theoretical planet in the outer reaches of our solar system may actually be a black hole.
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Palaeontologists have identified one of the largest flying creatures ever to live on planet Earth.
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Water vapor has been identified on what is being hailed as the most habitable exoplanet found to date.
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A land and air search was undertaken on Sunday after members of the public saw a glowing object in the sky.
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Elon Musk has hinted that SpaceX's next-generation interplanetary spacecraft could be absolutely huge.
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The US military's secretive pint-sized spacecraft has now spent a whopping 717 days up in space non-stop.
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It may be possible to detect signs of extraterrestrial life on a distant world by picking up its biofluorescence.
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The SpaceX CEO has long held the belief that nuking the Red Planet could make it more habitable for humans.
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Physicists now believe that a large planetary embryo collided with the gas giant in the distant past.