The most extensive and detailed pics of the small planet Pluto are really starting to come in!

On July 14, New Horizons became the first probe ever to fly by Pluto, zooming within 7,800 miles (12,550 kilometers) of the dwarf planet’s enigmatic surface. New Horizons sent some images and measurements back to its handlers immediately after the encounter, but stored the vast majority onboard for later transmission.

That transmission — which involves tens of gigabits of information — began in earnest on Saturday (Sept. 5) and should take about a year to complete, mission team members said.

Let’s find out more on what they expect and check out a video of New Horizon pics on page 2

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