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Earth, its cosmic home the Milky Way, and even the very local region of universe around us could be situated within a void of low density compared to the rest of the universe. If so, that would solve ...

Though a doomed star exploded some 20,000 years ago, its tattered remnants continue racing into space at breakneck speeds – and NASA’s Hubble Space Telescope has caught the action. The nebula, called ...

Real geodes are handball-sized, hollow rocks that start out as bubbles in volcanic or sedimentary rock. Only when these inconspicuous round rocks are split in half by a geologist, do we get a chance ...

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