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A new image released by NASA shows what could be a captivating — and terrifying — event roughly 650 light-years away: a dying ...
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.
Emission nebulae are glowing, spread-out clouds of ionized gas that shine with their own light. In this image of NGC 2313, the bright star V565 at the center lights up a silvery curtain of gas and ...
NGC 7293, better known as the Helix nebula, displays its ultraviolet glow courtesy of NASA's Galaxy Evolution Explorer (GALEX ...
M57, also known as the Ring Nebula, is a planetary nebula—the glowing remnant of a sun-like star. At its center lies a tiny white dot, the star’s hot core, known as a white dwarf.