During the merger, 100 trillion suns' worth of material collide, mix and ignite. [When Galaxies Collide: Photos of Great Galactic Crashes] And what's left after the fireworks?

The fireworks The force of gravity is enough to distort the shapes of galaxies as they encounter one another. But galaxies themselves are mostly (relatively) empty space.

Using their computer model, Cox and Loeb forecast that after the collision about 2 billion years from now, the Milky Way and Andromeda galaxies will be pulled together by gravity and blend into a ...

Gravity nudges galaxies toward one another—sometimes two, sometimes more—until they meet, their contents whooshing and mixing, and the slow-moving chaos molds them all into one big galactic ball.

The researchers used recent observations from the Gaia and Hubble space telescopes to create a simulation where the Milky Way and Andromeda galaxies existed with a few other nearby galaxies.

Collide Planets & StarsEpic, mind blowing collisions of massive planetary bodies that leave behind molten craters.Create Your Own SystemsStart with a star, then add a planet.

What Happens When Galaxies Collide? In about four billion years from now, the Milky Way and Andromeda galaxies will crash together Visualization: NASA, ESA, and F. Summers, STScI Simulation credit ...

The universe is expanding at an ever increasing rate but Arp-302 provides a textbook example of how gravity dominates in local space causing the two galaxies to collide, much like the Milky Way ...

As they get closer, gravity pulls them even more, leading them on a path to collide. Photo Credit: NASA ...

Webb's instruments shed new light on the merger between two galaxies and a brilliant burst of star formation.

Astrophysicist Paul Sutter details how galaxies collide, merge, and rip each other apart.

In about four billion years from now, the Milky Way and Andromeda galaxies will crash together Visualization: NASA, ESA, and F. Summers, STScI Simulation credit: NASA, ESA, G. Besla, Columbia ...