Recent content by Mario G

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    2 potentially habitable 'Super-Earths' and a record-setting 'Cold Neptune' found in exoplanet haul

    4 light yrs are around 9,500 billion kms and today our spaceships manage like 100,000 kms/day. Only 1 billion kms could be reached in around 10,000 days (27 yrs). What we the humans could gain knowing the closest exoplanet is at 4 light years away?