O vídeo contrasta a simulação com a realidade num choque de duas galáxias. O resultado de um cálculo numérico é comparado com cinco imagens tiradas a partir do telescópio Hubble.
Legenda do Youtube:
"A comparison of a simulation of a galaxy collision with five Hubble observations of galaxy collisions. No sound.
This visualization follows the evolution of a computer simulation of two galaxies colliding. At five points, the simulation is stopped, and the geometry of the simulated galaxies are compared to five different interacting galaxy pairs observed by the Hubble Space Telescope. Thus, one sees that each observation is just one snapshot of a billion-year-long process.
The interacting galaxy observations are part of a 59 image press release honoring the 18th anniversary of Hubble.
Visualization by Frank Summers (Space Telescope Science Institute). Simulation by Chris Mihos (Case Western Reserve University) and Lars Hernquist (Harvard University)."
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