Why is the Closest Planet Also the Most Difficult to Visit? | NASA's MESSENGER Mercury Probe

Why Mercury has only had one dedicated mission.Get MagellanTV here: https://try.magellantv.com/astrum and get an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV has the largest and best collection of Science content anywhere, including Space, Physics, Technology, Nature, Mind, and Body, and a growing collection of 4K. This new streaming service has 3,000+ great documentaries. Check out our personal recommendation and MagellanTV’s exclusive playlists: https://www.magellantv.com/genres/science-and-techAstrum merch now available! Apparel: https://teespring.com/stores/astrum-space Metal Posters: https://displate.com/promo/astrum?art=5f04759ac338bSUBSCRIBE for more videos about our other planets.Subscribe! http://goo.gl/WX4iMNFacebook! http://goo.gl/uaOlWWTwitter! http://goo.gl/VCfejsAstrum Spanish: https://bit.ly/2KmkssRAstrum Portuguese: https://www.youtube.com/channel/UChn_-OwvV63mr1yeUGvH-BQDonate! Patreon: http://goo.gl/GGA5xTEthereum Wallet: 0x5F8cf793962ae8Df4Cba017E7A6159a104744038Become a Patron today and support my channel! Donate link above. I can't do it without you. Thanks to those who have supported so far!Image Credits: NASA/Planetary Society/Space EngineMusic Credit: Cell - Hanging Masses https://ultimae.bandcamp.com/track/hanging-masses