Messier 20 (M20) is an emission nebula in the Sagittarius constellation. Its alternative designation is NGC 6514. M20 is also known as the Trifid Nebula.
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— by Joseph D. Schulman —
Messier 20 (M20) is an emission nebula in the Sagittarius constellation. Its alternative designation is NGC 6514. M20 is also known as the Trifid Nebula.
Click for larger view and more details (including purchasing options).
