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…]
Cygnus X-1 is a galactic X-ray source located in the northern constellation Cygnus. The X-ray source is believed to be a stellar mass black hole, one created from the collapse of a massive star about 5 to 6 million years ago. It is one of the strongest sources of X-ray emissions discovered and was the first … [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 the … [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.