Watch: NASA celebrates 50 years of planetary science awesomeness

On July 14, 2015, New Horizons will take the first close-up pictures of Pluto, exactly 50 years to the day after Mariner 4 flew by Mars and took the first close-up pictures ever of another planet.


"We just put out a short video showing are five ways Mariner 4 changed the way we explore," says NASA Jet Propulsion Laboratory Social Media Specialist Stephanie L. Smith. "Bonus? Vintage footage of pencil ties and pocket protectors."

[Video Link]