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Astronomy Picture of the Day: Active Prominences on a Quiet Sun

Why is the Sun so quiet? As the Sun enters into a period of time known as a Solar Minimum, it is, as expected, showing fewer sunspots and active regions than usual.

Astronomy Picture of the Day: Seeing Titan

Shrouded in a thick atmosphere, Saturn's largest moon Titan really is hard to see.

Astronomy Picture of the Day: Centaurus A

Only 11 million light-years away, Centaurus A is the closest active galaxy to planet Earth.

Astronomy Picture of the Day: Symbiotic R Aquarii

You can see it change in brightness with just binoculars over the course of a year.

Astronomy Picture of the Day: The Extraordinary Spiral in LL Pegasi

What created the strange spiral structure on the upper left?

Astronomy Picture of the Day: Charon: Moon of Pluto

A darkened and mysterious north polar region known to some as Mordor Macula caps this premier high-resolution view.

Astronomy Picture of the Day: From the Galactic Plane through Antares

Behold one of the most photogenic regions of the night sky, captured impressively.

Astronomy Picture of the Day: Dark Nebulas across Taurus

Sometimes even the dark dust of interstellar space has a serene beauty.

Astronomy Picture of the Day: Pillars of the Eagle Nebula in Infrared

Newborn stars are forming in the Eagle Nebula. Gravitationally contracting in pillars of dense gas and dust, the intense radiation of these newly-formed bright stars is causing surrounding material to boil away.

Astronomy Picture of the Day: Complex Jupiter

How complex is Jupiter? NASA's Juno mission to Jupiter is finding the Jovian giant to be more complicated than expected.

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