Lee Billings: Hey folks, it’s Lee Billings at Scientific American joined by my esteemed colleague...
Mike Lemonick: ...Mike Lemonick
Billings: And together we’re going to give you a very quick rundown of what’s up in the solar system in 2016.
Lemonick: Yeah, so let’s start with Mercury, closest planet to the sun. Astronomers have discovered a colossal canyon, twice as deep as the Grand Canyon. Mercury is gradually shrinking as it cools. And as it shrinks it crumples up, like a grape shrinks into a raisin, and making those little crevices—except this is a really big crevice.
