“Fasten your seat belts — New Horizons has arrived at the Pluto System.” Those were the words of Alan Stern, New Horizons’ principal investigator, at this morning’s briefing. After more than nine years and 3 billion miles, the spacecraft is inside the dwarf planet’s Hill sphere of influence and ready to take the first detailed measurements and photographs of Pluto.

New Horizons is already well within 1 million miles of Pluto and is rapidly approaching the 31,000 mile per hour flyby that will bring it within 7,800 miles (about 12,500km). Below you’ll find a schedule of what’s happening when, as well as when NASA will be doing live streams of the events here at the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland. But first,…

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