Posts tagged as black hole

First images of supermassive black hole revealed, and South Africa played a role in this

The first direct visual evidence of a supermassive black hole and its shadow was revealed live at an international media conference in Brussels, Belgium on 10 April 2019. The South African media was part of the conference via a video link hosted at the University of Pretoria. The black hole is at the centre of […]

Close galactic encounter leaves “nearly naked” supermassive black hole

  Astronomers using the super-sharp radio vision of the US National Science Foundation’s very long baseline array (VLBA) have found the shredded remains of a galaxy that passed through a larger galaxy, leaving only the smaller galaxy’s nearly-naked supermassive black hole to emerge and speed away at more than 3600 km per second.  The galaxies […]

Turbulence may prevent the formation of a large numbers of stars

  The same phenomenon that causes a bumpy airplane ride, turbulence, may be the solution to a long-standing mystery about the birth of stars, or the absence of it. This is the finding of  a new study using data from NASA’s Chandra X-ray Observatory. Galaxy clusters are the largest objects in the universe, held together […]

Chandra X-ray observatory celebrates 15 years in space

  Fifteen years ago, NASA’s Chandra X-ray Observatory was launched into space aboard the space shuttle Columbia. Since its deployment on 23 July  1999 Chandra has helped revolutionise the understanding of the universe through its unrivalled X-ray vision. Chandra, along with the Hubble Space Telescope and Spitzer Space Telescope, is specially designed to detect X-ray […]

Hubble peers at the heart of NGC 5793

  NGC 5793, a Seyfert galaxy, is of great interest to astronomers as it houses masers, which tell us a lot about their environment and supermassive black holes.  This new Hubble image is centred on NGC 5793, a spiral galaxy over 150-million light-years away in the constellation of Libra. This galaxy has two particularly striking […]