The definition of life should be replaced by a theory that allows us to derive the properties of life, specifically identifying life as a universal physical process.

“the way that I consider it is that we actually don't need to Define life we need to figure out a theory that helps us derive the properties of Life”

The hypothesis that life began in one location and spread through panspermia is less urgent to him than the possibility that life can arise independently on Earth given the right ingredients.

“So my issue with panspermia is, if you can make amino acids on rocks in space, or in the parent body from which it came, You can make amino acids on Earth without the rock. Earth has got all the same ingredients and then some. So this urge to appeal to panspermia, for me, seemed less urgent.”

The origin of life happened only once on Earth as a singular event.

“And I will tell you this, and this may actually blow your mind, because it is true that as far as we know, origin of life has happened once.”

Asteroids likely seeded early Earth and Mars with the prebiotic compounds needed for life.

“The latter is certainly more or less what we've kind of been leaning towards here and that the asteroids themselves could be seeding Mars and Earth with the prebiotic compounds that are needed for life to have evolved.”

Asteroids likely provided the building blocks for life, such as amino acids, to early Earth, where a hospitable watery environment enabled life to develop.

“it might be that that is how life got to Earth and and then you know the building blocks for life and then they had this lovely watery Rich environment where stuff could start forming”