constellation

 

Astronomy Picture of the Day: Stripping ESO 137-001

Spiral galaxy ESO 137-001 hurtles through massive galaxy cluster Abell 3627 some 220 million light years away.

Astronomy Picture of the Day: Messier 20 and 21

The beautiful Trifid Nebula, also known as Messier 20, is easy to find with a small telescope in the nebula rich constellation Sagittarius.

Astronomy Picture of the Day: Comet, Heart and Soul

The greenish coma of comet 21P/Giacobini-Zinner stands out at the left of this telephoto skyscape spanning over 10 degrees toward the northern constellations Cassiopeia and Perseus.

Astronomy Picture of the Day: Glowing Elements in the Soul Nebula

Stars are forming in the Soul of the Queen of Aethopia.

Astronomy Picture of the Day: Spiral Galaxy NGC 6744

Beautiful spiral galaxy NGC 6744 is nearly 175,000 light-years across, larger than our own Milky Way.

Astronomy Picture of the Day: Rings Around the Ring Nebula

There is much more to the familiar Ring Nebula (M57), however, than can be seen through a small telescope.

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: Messier 24: Sagittarius Star Cloud

Unlike most entries in Charles Messier's famous catalog of deep sky objects, M24 is not a bright galaxy, star cluster, or nebula.

Astronomy Picture of the Day: Sigma Octantis and Friends

South pole star Sigma Octantis (of the constellation Octans) is on the left of this starry expanse spanning over 40 degrees across far southern skies.

Astronomy Picture of the Day: Highlights of the Summer Sky

What can you see in the night sky this summer?

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