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

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Whirlpool Nebula (Messier 51) in Canes Venatici

The Whirlpool Nebula, also known as Messier 51, Arp~85, VV~1 and NGC 5194/NGC 5195, was the first object in the night sky with a spiral structure to be discovered, way back in 1845. It can be found in the constellation Canes Venatici. Messier 51 really consists of two galaxies, NGC 5194 and NGC 5195. NGC 5194 is a large spiral galaxy, while its companion is a smaller barred galaxy.

Messier 51 is not as big and massive as the Milky Way, but it is brighter as a result of being populated by bright, hot, young O and B type stars. It is approximately 31 million light-years distant.

whirlpool nebula,whirlpool galaxy,canes venatici,spiral galaxy

Whirlpool Nebula (Messier 51) in Canes Venatici

Antennae Galaxies (NGC 4038/NGC 4039) in Corvus

The Antennae Galaxies in the constellation Corvus are a pair of interacting galaxies currently undergoing collision. Over 1.2 billion years ago, the Antennae were two separate galaxies; spiral galaxy NGC 4038 and the larger barred spiral galaxy NGC 4039. In the next 400 million years, their nuclei are expected to merge into a single core.

The Antennae Galaxies illustrate a likely future of the Milky Way when it collides with the Andromeda Galaxy.

Antennae Galaxies,NGC 4038,NGC 4039,corvus constellation

The Antennae Galaxies