The space telescope Hubble from NASA and the European Space Agency captured the image of a “dangerous dance” of two merging galaxies. They are two spiral constellations located one hundred million light years from Earth: the NGC 5953 and the NGC 5954. In the wake of the merger, the scientists gave it a common name: Arp 91.
Arp 91 is an example of a galactic interaction. The spread image shows that NGC 5953 (at the bottom) “pulls” NGC 5954. “The immense gravitational pull of the two galaxies causes them to interact”said NASA, who stressed that these interaction phenomena are “common”, as well as “an important part of galactic evolution.”
Andromeda and Milky Way
In addition, NASA explained that collisions between spiral galaxies can lead to the formation of elliptical galaxies. It is estimated that the merger will take place in about 4.5 billion years. According to the images, the Milky Way will impact a neighboring galaxy, Andromeda, which has a diameter of 220 thousand years and an age of 150 thousand light years.
The moment the merger takes place there will be a planetary crash. As it is in an initial phase, it is likely to last several hundred million years until it is finished. The moment of impact will be given by the great gravitational attraction of the galaxies, which will lead to the elliptical galaxy after a collision that recien would happen, according to astronomers, in about a hundred million years.
Hubble was launched into orbit in April 1990 and is almost 600 kilometers above sea level. It takes just over an hour and a half to travel the circumference of the Earth.