‘NOVA’ presents ‘Asteroids: A Spark of Life?’

Wednesday, January 21 at 8 p.m.

“NOVA” is back for season 53 starting with the premiere, “Asteroids: A Spark of Life?”

What if asteroids, long feared as destroyers of life, were the key to our existence? Explore a revolutionary theory that these violent collisions provided the essential ingredients, water, minerals and energy, needed to jumpstart life on Earth.

Discover the past and future of science and technology with an inspiring overview of special programs. Featuring highlights from “NOVA,” “Nature,” “Arizona Horizon” and more, enjoy groundbreaking stories that bring the wonders of science and human innovation to life.