Enjoying EarthSky? Subscribe.

111,139 subscribers and counting ...

Clusters Nebulae Galaxies

Look first for the Scorpion.  It's in the south on summer evenings as seen from the N. Hemisphere.  Notice Antares, the red heart of the Scorpion.  Then, assuming you have a dark sky, look just to the right of Antares for M4.
Tonight | Jul 31, 2014

Find M4, a globular cluster by the Scorpion’s heart

In a dark sky, look for fuzzy object near bright Antares in the constellation Scorpius. This is M4, one of the closest globular star clusters to our solar system.

Photo Credit:  coliwabl
Tonight | Jul 08, 2014

M6 and M7: Deep-sky gems in Tail of Scorpius

They may well be the finest star clusters visible at this time of year, and they’re easy to spot near the Scorpion’s Tail, if you have a dark sky.

M5, via HST/NASA/ESA.
Tonight | Jun 12, 2014

M5 might become your favorite globular star cluster

Sure, M13, the Great Hercules cluster is wonderful. But some amateur astronomers say this cluster, M5, is even better.

Photo Credit: Spitzer Space Telescope
Tonight | Jun 02, 2014

Omega Centauri is our galaxy’s largest globular star cluster

Omega Centauri is the largest globular cluster known in the Milky Way galaxy. You can spot it soon after sunset on these June evenings.

Photo Credit: Bob Star
Tonight | Apr 22, 2014

M13: Great Cluster in Hercules

The Great Cluster in the constellation Hercules – also known as M13 – is considered to be the finest globular cluster in the northern half of the heavens.

Coma Cluster of galaxies by Justin Ng.
Tonight | Apr 07, 2014

Coma Cluster of galaxies

The Coma Cluster is one of the richest galaxy clusters known. How many suns and how many worlds might be located in this direction of space?

Photo Credit: zamb0ni
Tonight | Jan 09, 2014

Orion Nebula is a place where new stars are born

On some moonless night, look for the Orion Nebula below Orion’s Belt. Your eye sees it as a tiny, hazy spot. But it’s a vast region of star formation.

large_magellanic_cloud2
Tonight | Dec 27, 2013

Large Magellanic Cloud is spectacular from Earth’s Southern Hemisphere

From tropical latitudes in the Northern Hemisphere, where it can be observed, the LMC is best seen in the evening from December to April. From the Southern Hemisphere, it’s easy to see and spectacular!

Photo Credit: Bob Star
Tonight | Nov 19, 2013

Double Cluster in Perseus: Two star clusters

The Double Cluster is in the constellation Perseus is highest in the northern sky on late autumn and early winter evenings.

Pleiades star cluster, aka the Seven Sisters.
Tonight | Nov 11, 2013

Pleiades star cluster: Famous Seven Sisters

Frosty November is often called the month of the Pleiades, because it’s at this time that the Pleiades shine from dusk until dawn.

Great galaxy in Andromeda
Tonight | Oct 26, 2013

Andromeda galaxy is Milky Way’s next-door neighbor

At a distance of 2.3 million light-years, the Andromeda galaxy (Messier 31) is the closest spiral galaxy to our Milky Way. It’s the most distant thing you can see with your eye alone.

Image Credit: NASA
Tonight | May 04, 2010

Small Magellanic Cloud: a nearby dwarf galaxy

If you could view it with your eye alone – in the sky visible from Earth’s Southern Hemisphere – you would say it does resemble a luminous cloud. Really, though, it is a nearby dwarf galaxy, orbiting our Milky Way.

Photo Credit:  NASA
Tonight | Jun 29, 2009

M11: Wild Duck Cluster

The Wild Duck Cluster (Messier 11) is found in the constellation Scutum the Shield, just south of the Eagle’s Tail in the constellation Aquila. Unless you have eagle eyes, don’t expect to see this distant star cluster with the eye alone. Starting from the star Altair, star-hop to M11′s general location. Then find it with binoculars!

10feb01
Tonight | Jun 29, 2009

M20: Trifid Nebula

The Trifid Nebula (Messier 20) is one of the many binocular treasures in the summer Milky Way. Its name means “divided into three lobes,” but you’ll probably need a telescope to see why. On a dark, moonless night, you can star-hop upward from the spout of the Teapot in Sagittarius to the Lagoon Nebula (Messier 8). In the same binocular field, look for the smaller and fainter Trifid Nebula as a fuzzy patch above the Lagoon.

10feb01
Tonight | Jun 29, 2009

The Lagoon Nebula, Messier 8

The Lagoon Nebula is the largest and brightest of a number of nebulosities in and around Sagittarius.

Photo Credit:  Richard Hammar
Tonight | Jun 29, 2009

M33: Triangulum Galaxy

Although long-exposure photographs show the Triangulum galaxy (Messier 33) in a beautiful pinwheel shape, this face-on spiral galaxy looks relatively lackluster in binoculars or even the telescope. The Triangulum galaxy has a low surface brightness that makes this faint object a major challenge, with or without binoculars.

Photo Credit:  madmiked
Tonight | Jun 29, 2009

M16 and M17: Eagle and Omega Nebulae

Barely visible to the unaided eye on a dark, moonless night, the Eagle Nebula (Messier 16) and Omega Nebula (Messier 17) are best seen through binoculars, or low power in a telescope. These two closely-knit patches of light readily fit within the same binocular field. Star-hop to them from the Teapot in Sagittarius.

Photo Credit:  Eclipse.sx
Tonight | Jun 29, 2009

Great Rift: Dark area in the Milky Way

Outside on a dark summer night, looking edgewise into our galaxy’s disk, you’ll notice a long, dark lane dividing the bright starry band of the Milky Way. This is the Great Rift.

Photo Credit:  Wil Milan
Tonight | Jun 29, 2009

Beehive: 1,000 stars in Cancer

Between the star Regulus in Leo and the stars Castor and Pollux in Gemini, you might notice a smudge – really a cluster of stars – called the Beehive.

Telescopic view of M4
Tonight | May 29, 2009

M4: Globular cluster near Antares

If you’ve never found a deep-sky object on your own before, M4 is a grand place to start. The M4 star cluster is easy to find, because it’s right next to Antares, the brightest star in the constellation Scorpius the Scorpion. This is not an open star cluster or loose collection of fairly young stars. Instead, it’s a globular star cluster, a symmetrical grouping of some of the galaxy’s oldest stars.