Tag:emission nebulae

101 Must-See Cosmic Objects: The Trifid Nebula

The Trifid Nebula (M20) is the trifecta of deep-sky objects: It combines a blue reflection nebula with an emission nebula glowing in crimson...

101 Must-See Cosmic Objects: NGC 253

The Silver Greenback or Sculptor Galaxy is the brightest deep-sky object within the diminutive constellation Sculptor. NGC 253 is extremely inclined at 78°...

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See 6 planets in late August and early September

See 6 planets earlier than dawn Possibly you’ve already seen Jupiter and Mars within the morning sky? They’re simply...

Voyager 2: Our 1st and last visit to Neptune

Reprinted from NASA. Voyager 2 passes by Neptune, 35 years in the past Thirty-five years in the past, on August...

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