An ancient planetary

Imaged by Eric Coles from Sierra Remote Observatories in the Sierra Nevada Mountains, processed by Bob Fera Planetary nebulae are beautiful, ephemeral objects created as a dying star lets go of its outer layers, blowing them away in stellar winds. This gas usually cools and disperses within 20,000 years. But the Methuselah Nebula (MWP1), 4,500 light-yearsContinue reading “An ancient planetary”
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