NASA @NASA
Moon dust is a formidable adversary. The grains are as fine as powder and as sharp as tiny shards of glass. The Volatiles Investigating Polar Exploration Rover is running tests to ensure its wheels are dust-proof in advance of going to the Moon in 2023. https://t.co/Y17JD3hob6 https://t.co/r7CrAdOJSd — PolitiTweet.org