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Science

Astronauts help coral grow on ocean floor off of Florida


Astronaut Buzz Aldrin rolling out the red carpet for Mars


SpaceX tries again to launch 1st recycled supply ship


Rocket test sparks fire at Kennedy Space Center


Military orbiter's landing rattles Florida with sonic boom


NASA releases stunning new image of Earth at night


What to know about the vernal equinox


NASA finds Earth-sized, habitable planets orbiting a star


SpaceX aborts approach to space station, delivery delayed


SpaceX's Falcon 9 launched Sunday