Insight Into: Galaxy Collisions

 

 

Produced by the Space Telescope Science Institute’s Office of Public Outreach.

 

All images, illustrations, and videos courtesy of NASA, ESA, and STScI except:

 

·       Taurus constellation drawing from Firmamentum Sobiescianum sive Uranographia by Johannes Hevelius, courtesy of the United States Naval Observatory

·       Large galaxy collision animation courtesy of NASA/Goddard Space Flight Center and the Advanced Visualization Laboratory at the National Center for Supercomputing Applications, B. Robertson, L. Hernquist

·       Expanding universe animation courtesy of NASA

·       Andromeda Galaxy image courtesy of Digitized Sky Survey 2, acknowledgment: Davide De Martin (ESA/Hubble)

·       Animated pan through Milky Way courtesy of ESO/M. Kornmesser

·       Animation of stars moving courtesy of Frank Summers (STScI)

·       Animation of random stellar orbits courtesy of NCSA, UCLA/Keck

·       Milky Way formation animation ©Prof. Romain Teyssier (University of Zurich)

·       Major and minor galaxy merger animations ©Dr. Benjamin Moster (Max-Planck-Institute for Astrophysics)

·       Fly-around animation of Sagittarius Dwarf Galaxy courtesy of David Law (Dunlap Institute, University of Toronto)

·       Animation of two colliding spiral galaxies courtesy of Volker Springel, Max-Planck-Institute for Astrophysics

 

 

Written by Vanessa Thomas and John Stoke

Designed by John Godfrey and Marc Lussier

Music courtesy of Association Production Music

(SPEECH) 

 [DOWNBEAT MUSIC] 

(DESCRIPTION) 
 A white, blue, and orange spiral galaxy. 

Text, A galaxy, containing billions of stars, floats serenely in space. 

A wider view shows that it is not alone. 

A second, smaller spiral galaxy is beside the first. 

Two orange spiral galaxies neighbor a white spiral galaxy. 

Text, Gravity pulls galaxies toward each other and binds them into groups. 

Collisions are inevitable. 

Here, two galaxies are engaged in a collision. 

A wisp of gas binds two galaxies together. 

Text, Eventually they'll merge to form one, much larger galaxy.