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Io Eclipse Shadow on Jupiter from Juno

What's that dark spot on Jupiter?

Jupiter and the Moons

After sunset on October 3, some of the Solar System's largest moons stood low along the western horizon with the largest planet.

The Annotated Galactic Center

The center of our Milky Way galaxy can be found some 26,000 light-years away toward the constellation Sagittarius.

Sand Dunes Thawing on Mars

What are these strange shapes on Mars?

The Tulip in the Swan

Framing a bright emission region, this telescopic view looks out across a pretty field of stars along the plane of our Milky Way Galaxy.

A Harvest Moon

Famed in festival, story, and song the best known full moon is the Harvest Moon.

The Iris Nebula in a Field of Dust

These cosmic dust clouds drift some 1,300 light-years away along the fertile starfields of the constellation Cepheus.

California nebula & Pleiades

California nebula & Pleiades

In Wolf's Cave

The mysterious blue reflection nebula found in catalogs as VdB 152 or Ced 201 really is very faint.

NGC 7129 and NGC 7142

The two appear separated by only half a degree on the sky, but they actually lie at quite different distances.

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