The Omega Nebula, also known as Messier 17 (M17), is a bright emission nebula located in Sagittarius constellation. It was named Omega for its resemblance to the Greek letter omega, Ω. The nebula has the designation NGC 6618 in the New General Catalogue. It is also known as the Swan Nebula, Horseshoe Nebula, Lobster Nebula, … [Read more…]
The Trifid Nebula, also known as Messier 20 (M20), is a large star-forming region located in the southern constellation Sagittarius. The nebula’s name means “divided into three lobes,” and refers to the object consisting of three types of nebulae and an open star cluster. The open cluster is surrounded by an emission nebula, a reflection … [Read more…]
Here are some of the highlights of the night sky in July: 10:30 PM, western sky – Saturn and Mars coming near the western horizon 11 PM, southern sky – Scorpius constellation, with the prominent tail and stinger, the red supergiant Antares marking the scorpion’s heart, and the globular cluster Messier 4 (M4) lying in … [Read more…]
Sagittarius A (Sgr A) is a complex radio source located at the centre of the Milky Way Galaxy. It lies in the direction of Sagittarius constellation, near the border with Scorpius. The radio source consists of the supernova remnant Sagittarius A East, the spiral structure Sagittarius A West, and a bright compact radio source at … [Read more…]
The Lagoon Nebula, or Messier 8 (M8), is a large interstellar cloud classified as an emission nebula and an H II region. The nebula is located in Sagittarius constellation, within the Milky Way Galaxy. It lies in the direction of the galaxy’s centre. The nebula’s designation in the New General Catalogue is NGC 6523.
Here are the highlights of the July sky: 9 PM western sky – Venus low in the west 10:30 PM southern sky – Saturn moving toward the western horizon and setting after midnight 11 PM southern sky – Scorpius constellation with the red supergiant Antares, and the globular cluster Messier 4 to the left of … [Read more…]
NGC 1277 is a lenticular galaxy located in Perseus constellation. It lies at a distance of about 220 million light years from Earth. The galaxy has an apparent visual magnitude of 14.7. It is notable for having an extremely heavy supermassive black hole at its centre, one of the largest black holes ever found.