The universe is full of wonders, but some worlds are downright deadly. From searing heat to violent storms, these planets make Earth look like a paradise. Many of them challenge everything we know ...

Maine Public Film Series is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course. When ...