@CNN: Last week, a giant dust storm on Mars took up about a quarter of the Red Planet. Now, it’s officially a “planet-encircling” global dust event, according to NASA. https://t.co/izN8i9WtpV https://t.co/xujHz0KsK5

@CNN: Last week, a giant dust storm on Mars took up about a quarter of the Red Planet. Now, it’s officially a “planet-encircling” global dust event, according to NASA. https://t.co/izN8i9WtpV https://t.co/xujHz0KsK5