Decades of constant X-ray emission from the Helix Nebula’s white dwarf suggest debris from a Jupiter-sized planet steadily rains upon the star.
Scientists have been receiving X-ray signals from the Helix Nebula for decades, but now they believe it may hide a horrifying ...
NASA captured a stunning image of NGC 6826, also known as Caldwell 15, a planetary nebula in the Cygnus constellation. The Helix Nebula is a planetary nebula that appears like a bubble or an eye from ...
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