New book reveals NASA photographer's unseen Mercury astronaut archives
Mercury’s Journey from Coal-Burning Power Plants to Your Plate. The EPA wants to lower people’s exposure to this potent neurotoxin by going after the pollutant’s biggest source.
Earth isn't the only planet with aurorae: Besides Mercury, every planet in our solar system (as well as a few moons) display some form of auroral activity. Astronomers have even found aurorae on a rogue exoplanet that wanders the Milky Way without a host star.
