Active galaxy Markarian 509: This  image from the NASA/ESA Hubble Space Telescope shows the galaxy  Markarian 509. The bright object at the centre of the galaxy, which  appears like a star, is an active galactic nucleus. This is a bright  celestial phenomenon caused by matter glowing as it falls into a  supermassive black hole at the heart of the galaxy.The  surroundings of the black hole in Markarian 509 have been studied in a  major campaign which includes the NASA/ESA Hubble Space Telescope, as  well as other telescopes in space and on the ground.

Name: Mrk 509
Type: Local Universe : Galaxy : Activity : AGN : Seyfert
Category: Galaxies
Constellation: Aquarius
Distance: 500 million light years
Release date: 29 September 2011, 14:10
Credit: NASA, ESA, J. Kriss (STScI) and J. de Plaa (SRON)

Hubble view of M 106: This image combines Hubble observations of M 106 with additional information captured by amateur astronomers Robert Gendler and Jay GaBany. Gendler combined Hubble data with his own observations to produce this stunning colour image. M 106 is a relatively nearby spiral galaxy, a little over 20 million light-years away.

Type: Local Universe : Galaxy : Type : Spiral
Category: Galaxies
Constellation: Canes Venatici
Release date: 5 February 2013, 16:00
Credit: NASA, ESA, the Hubble Heritage Team (STScI/AURA), and R. Gendler (for the Hubble Heritage Team). Acknowledgment: J. GaBany, A van der Hoeven

Screenshot of Hubblecast 69: Screenshot of Hubblecast 69: What has Hubble learned from star clusters?.

Name: M 15, Messier 15
Type: Milky Way : Star : Grouping : Cluster : Globular
Category: Star Clusters
Constellation: Pegasus
Release date: 14 November 2013, 16:00
Credit: NASA & ESA

Screenshot of Hubblecast 76: Screenshot of Hubblecast 76: Merging galaxies and droplets of starbirth.

Name: HUBBLEcast
Type: Local Universe : Galaxy : Type : Interacting
Category: Illustrations
Constellation: Corona Borealis
Release date: 10 July 2014, 16:00
Credit: NASA & ESA

Still from Hubblecast 107: The meaningful colours of NGC 3344: This is a still from Hubblecast 107, which explains the meaning of the colours in the spiral galaxy NGC 3344.

Name: NGC 3344
Type: Local Universe : Galaxy : Type : Spiral
Category: Illustrations
Constellation: Leo Minor
Release date: 14 February 2018, 16:00
Credit: ESA/Hubble

Cygnus X-1 (ground-based image): Wide-field, ground-based image showing the visible light component of Cygnus X-1 (centre), a rich source of X-rays in the constellation of Cygnus, the Swan.

Name: Cygnus X-1
Type: Local Universe : Star : Type : Variable : X-Ray Binary (Star)
Category: MiscellaneousStars
Release date: 1 January 2002
Credit: NASA, ESA, and the Digitized Sky Survey 2. Acknowledgment: Davide De Martin (ESA/Hubble)

The active galaxy Markarian 1018: The mystery of a rare change in the behaviour of the supermassive black hole at the centre of the distant galaxy Markarian 1018 has been solved by an international team of astronomers using ESO’s Very Large Telescope along with the NASA/ESA Hubble Space Telescope and NASA’s Chandra X-ray Observatory. The image was taken with the MUSE instrument on ESO’s Very Large Telescope. The faint loops of light around the galaxy are a result of its interaction and merger with another galaxy in the recent past.

Name: Markarian 1018
Type: Local Universe : Galaxy : Activity : AGN : Seyfert
Category: Galaxies
Constellation: Cetus
Distance: 600 million light years
Release date: 16 September 2016, 13:11
Credit: ESO/CARS survey

The Galaxy NGC 4450 is Host to a Supermassive Black Hole: The nearby spiral galaxy NGC 4450 is one of the galaxies in which Hans-Walter Rix and collaborators have identified a supermassive black hole. The picture reveals nothing unusual in the galaxy centre. Yet, the group of astronomers have measured wildly rotating gas in a disk around the centre of the galaxy with the STIS instrument onboard Hubble.

Name: NGC 4450
Type: Local Universe : Galaxy : Type : SpiralLocal Universe : Galaxy : Component : Central Black Hole
Category: Galaxies
Constellation: Coma Berenices
Distance: 55 million light years
Release date: 5 June 2000, 15:00
Credit: ESA HEIC/Hans-Walter Rix

First close look at gamma-ray burst host galaxy ESO 184-G82: The galaxy ESO 184-G82 was host to a combined gamma-ray burst and supernova explosion seen first time in 25 April 1998. The galaxy is a barred spiral of type SBbc which is a loosely wound spiral galaxy with a central bar. These galaxies are typically star-forming, and this galaxy is no exception. In its spiral arms large clumps of star-forming regions are visible. This Hubble observation was carried out 12 June 2000. The field of view of the image is 45 x 35 arcseconds.

Name: ESO 184- 82
Type: Local Universe : Galaxy : Type : SpiralLocal Universe : Galaxy : Type : Barred
Category: Galaxies
Constellation: Telescopium
Distance: 120 million light years
Release date: 27 June 2000, 15:00
Credit: ESA, Stephen Holland (Danish Centre for Astrophysics with the HST), Jens Hjorth, Johan Fynbo (University of Copenhagen)