Messier 77: Barred Spiral Galaxy in Constellation Cetus

Messier 77, or NGC 1068, is a barred spiral galaxy located in the Cetus constellation, approximately 47 million light-years distant from Earth and 170,000 light-years in diameter.

Messier 77,NGC 1068,Cetus,barred spiral galaxy

Barred Spiral Galaxy NGC 1068 (Messier 77) in Cetus

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Fireworks Galaxy (NGC 6946) in Cepheus Constellation

The Fireworks Galaxy (NGC 6946)is a large spiral galaxy located in the Cepheus constellation, near the border with Cygnus. It has a visual apparent magnitude of 11 and is not always easy to observe even in large telescopes.

Fireworks Galaxy,NGC 6946,Cepheus constellation

The Fireworks Galaxy (NGC 6946) in Cepheus

Photo: Simon Driver (St. Andrews)

Centaurus A (NGC 5128) in Centaurus Constellation

Centaurus A (NGC 5128) is a lenticular galaxy located in the constellation Centaurus, lying about 11 million light-years from Earth. Centaurus A contains mostly red stars well into the evolution cycle. It is the fifth brightest galaxy in night sky.

Centaurus A,Centaurus Constellation

Centaurus A in Centaurus Constellation

Photo: European Southern Observatory

Messier 52 in Cassiopeia constellation

Messier 52 (NGC 7654) is an open star cluster located in the constellation Cassiopeia. It is approximately 35 million years old. The brightest stars in the cluster are a couple of giants, one with a magnitude of 7.77 and the other, 8.22.

Messier 52 lies 5,000 light-years from Earth.

Messier 52,Cassiopeia,cluster,star cluster

Messier 52 in Cassiopeia

[Atlas Image obtained as part of the Two Micron All Sky Survey (2MASS), a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.]

Eta Carinae Nebula in Carina Constellation

Eta Carinae Nebula (NGC 3372) in Carina constellation is a large emission nebula that contains a number of O-type stars and several open star clusters. The brightest, most notable star in the nebula is eta Carinae, a supergiant 100 times as massive as the Sun, expected to explode as a supernova or hypernova in the relatively near future. Eta Carinae is one of the brightest and most massive stars in the Milky Way galaxy. It lies 7,500 – 8,000 light-years away.

The Carina Nebula is between 6,500 and 10,000 light-years distant from Earth.

Eta Carinae Nebula,Eta Carinae,Carina constellation

Eta Carinae Nebula in Carina constellation

Photo: Spitzer Science Center

Messier 30 (NGC 7099) in Capricornus

Messier 30 (NGC 7099) is a globular cluster first discovered by Charles Messier in 1764. It is located in the constellation Capricornus and approximately 28,000 light-years distant from Earth.

messier 30,star cluster,capricornus,star constellation

Messier 30 in Capricornus constellation

Photo: Hubble/Wikisky

Tau Canis Majoris Cluster (NGC 2362) in Canis Major

NGC 2362, or the Tau Canis Majoris Cluster, is an open star cluster located in the constellation Canis Major. It was named after its brightest star, tau Canis Majoris, an eclipsing binary star approximately 3,200 light-years distant. Tau Canis Majoris is classified as an O-type blue supergiant.

The Tau Canis Majoris Cluster consists of about 60 stars and is approximately 25 million years old.

NGC 2362,tau canis majoris cluster,star cluster,canis major

Tau Canis Majoris Cluster (NGC 2362) in Canis Major

Photo: NASA (Spitzer)