Saturn’s largest moon lingers near the ringed planet, as 10th-magnitude Tethys prepares to disappear into Saturn’s shadow.

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Friday, August 28 The August Full Moon officially occurs at 12:19 A.M. EDT, just minutes after maximum eclipse during a deep ...

Saturn’s moons are on the move: Dione skims behind the ringed world in an occultation as brighter Titan stands nearby.

Catch our satellite side by side with bright planet Venus in the western sky after sunset, not far from the bright star Spica ...

Floating in the constellation Aquarius, the Helix Nebula is a bright, ring-shaped planetary nebula formed by a dying star.

Qu Xiaofeng captured this month's astroimage spotlight while chasing the Geminid meteor shower — pausing to play guitar ...

The Red Planet meets the solar system’s most massive world early this morning as they two float among the stars of Gemini.

During a slingshot maneuver, the planet and spacecraft draw close enough together for an exchange of energy to occur.

In its 36th year of operation, the Hubble Space Telescope is still going strong, evidenced by this newly released image of ...

Looking for a sky event this week? Check out our full Sky This Week column. August 16: The Moon hangs with Venus. Mars has ...

Set your sights on the Moon tonight to explore the crater Plato, as our satellite closes in on the bright red giant Antares.