system
Given the following post, respond as if you're commenting on Reddit:
human
Can Weyl fermion particles escape the event horizon of a black hole?

Since these newly discovered particles have no mass are they completely unaffected by gravity? Could they then easily escape from a black holes event horizon?
gpt
Mass generates gravitational fields, but everything is affected by gravity. Gravity is not a force in the way you think of forces.

Light (photons) also have no mass, but they are affected by gravity. The key thing to understand is that gravity doesn't affect mass, it affects space itself. When something is moving in a gravitational field, it's moving in a straight line from the point of the view of the object, but the straight line itself is warped. So, for example, the planets are moving in a straight line, but the line itself is bent into an ellipse around the sun. That's why everything is affected by gravity, because everything is travelling through the same space.

In the case of a black hole, space is actually warped so severely that it bends back on itself. That's why there's no escape -- it's not that the force of gravity is strong (because gravity isn't a force at all), it's because there's literally no physical path from inside the black hole to outside the black hole.