Cosmic Collisions

Josh Barnes

Stellar Collision

A collision between the Sun and another star would take a few hours

Afterwards, the Solar System would be a “disaster area”

What is the chance that the Sun will ever collide with another star?

One in four billion.

.

What are chances that the Sun or Earth will ever collide with a Black Hole?

Far lower still.

But …in some parts of the Galaxy, the odds of collisions are much higher.

Galaxy Collisions

The Milky Way is now swallowing a small galaxy, the Sagittarius dwarf.

In a few billion years the Milky Way will collide with our larger neighbor, the

Andromeda galaxy

”The Mice'' are in the middle of a collision that will last 300 million years.

The Mice at Play

How Dangerous are Galactic Collisions?

mostly harmless, unless...

….. the galaxies contain supermassive black holes.

Conclusion:

Don’t Panic