The legendary Hubble telescope — a cloud that makes its own light.
Called an “,” it’s a bright cloud whose gases get excited by radiation from nearby stars, and ultimately emit light. (In other words, this isn’t starlight isn’t being reflected off the gas.)
The right side of this image, however, is darkened by a great cloud of dust, which blocks light from reaching the Hubble Space Telescope.
☁️ A cosmic cloud with a silver lining captured this image of emission nebula NGC 2313. Emission nebulae are bright, diffuse clouds of ionized gas that emit their own light:
— NASA (@NASA)
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