nebula

Example Sentences

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First observed in the early 1800s, the Helix Nebula has become one of the most recognizable planetary nebulas in the sky thanks to its bold, ring-like appearance.

From Science Daily

These sources include pulsars, planetary nebulae, compact HII regions -- which are dense, ionized gas clouds in space -- as well as distant galaxies that lie far beyond the Milky Way.

From Science Daily

One part of the project, the Stellar, Circumstellar and Interstellar Physics survey led by Professor Drew, is already observing many additional ionised nebulae across the northern Milky Way.

From Science Daily

These glowing structures form two long, narrow nebulae driven by intense activity around a supermassive black hole at the galaxy's core.

From Science Daily

These glowing regions are known as emission nebulae.

From Science Daily