Galaxy Formation and Mergers


Galaxy Formation One of the greatest challenges facing...

Radio Programs

Odd Relationship Black holes shut down starbirth Thursday, December 17, 2015
Double Black Hole Stirring up the center of a galaxy Sunday, November 22, 2015
Faintest Cluster A faint cluster that’s doomed Sunday, October 4, 2015
More Cosmic Background Taking the universe’s temperature Friday, October 2, 2015
Omega Centauri Alien visitors from other galaxies Tuesday, May 26, 2015
Deep Vision Looking deep into the universe Saturday, December 20, 2014
Tadpole Galaxy A tadpole swims near the dragon Thursday, November 27, 2014
Galaxy Mergers When galaxies collide Wednesday, November 26, 2014
Three-Headed Monster A trio of giant black holes Wednesday, October 8, 2014
Condor Galaxy The condor stretches its galactic wings Saturday, March 15, 2014
Triangulum Galaxy A galaxy that’s losing its identity Sunday, November 10, 2013
Andromeda Galaxy III Building a galactic giant Saturday, November 9, 2013
Coma Galaxy Cluster A brilliant cluster of galaxies Friday, April 19, 2013
The Antennae Seeing the future of the Milky Way Tuesday, April 16, 2013
Andromeda Starburst Brightening up a giant galaxy Thursday, September 13, 2012
Collision Course Taking aim at another galaxy Wednesday, September 12, 2012
The Sombrero II Two galaxies for the price of one Tuesday, July 3, 2012
The Sombrero Looking beneath the brim of a galaxy Monday, July 2, 2012
Centaurus A A galaxy with a loud voice Sunday, April 29, 2012
Galactic Streams Blending into the Milky Way Thursday, March 22, 2012
Sagittarius Dwarf A galactic tug-of-war Wednesday, March 21, 2012
Satellite Galaxies Satellite galaxies for the Milky Way Tuesday, March 20, 2012
Cartwheel Galaxy Creating a brilliant ring of stars Saturday, October 15, 2011
Galaxies and Black Holes Insight into a chicken-and-egg problem Tuesday, March 8, 2011
Galactic Pileup A big galactic pileup Saturday, January 15, 2011

Featured Images

Hubble view of galaxy Markarian 231
Double Double Sunday, November 22, 2015
Hubble Space Telescope image of spiral galaxy Messier 66
Evidence of an Encounter Sunday, April 12, 2015
Hubble Space Telescope view of Abell 2744, a massive galaxy cluster
On the Frontier Monday, March 9, 2015
Hubble image of the aftermath of a galactic collisio
Beautiful Disruption Friday, January 30, 2015
Hubble Space Telescope view of Tadpole Galaxy
Galactic Tadpole Thursday, November 27, 2014
Combined visible, X-ray image of M51, the whirlpool galaxy
Colorful Whirlpool Wednesday, June 4, 2014
Simulation of the early universe
Tangled Web Saturday, May 10, 2014
HST image of thousands of galaxies
Galaxies Galore Thursday, April 17, 2014
The Condor galaxy
Night of the Condor Saturday, March 15, 2014
Telescopic view of M33, the Triangulum Galaxy
Pirouetting Octopus Sunday, November 10, 2013
The Antennae galaxies
Getting Together Tuesday, April 16, 2013
Andromeda and the Milky Way head for a galactic pile-up
Collision Course Wednesday, September 12, 2012
Hubble image of a pair of galaxies
Bright Companions Friday, September 7, 2012
Hubble Space Telescope view of M104, the Sombrero Galaxy
Galactic Hat Dance Monday, July 2, 2012
The remnants of two merged galaxies
Fast Exit Monday, June 18, 2012
Combined X-ray, optical, and radio view of the galaxy Centaurus A
Busy Galaxy Sunday, April 29, 2012
Optical and X-ray image of the galaxy cluster Abell 383
Brilliant Darkness Friday, March 16, 2012
Galactic Swirl Wednesday, December 14, 2011
Radio image of the Antenna galaxies
Boundless Starbirth Wednesday, October 5, 2011
NGC 4438 and NGC 4435, galaxies in Virgo
Beautiful Eyes Thursday, August 25, 2011
NGC 3758, a system of two merging galaxies
Double Trouble Saturday, June 11, 2011
NGC 7252, aka the Atoms-for-Peace galaxies
Atomic Pile-up Saturday, November 20, 2010
Ground-based image of the galaxy cluster Abell 2151, in Hercules
Galaxies Galore Friday, October 1, 2010
Galactic Beauty Wednesday, August 11, 2010
Beautiful Triplets Monday, March 8, 2010


©2015 The University of Texas McDonald Observatory