If you don’t want to miss the planet-formerly-known-as-Pluto’s flyby NASA’s spacecraft on Tuesday, you may want to set an alarm or a reminder now.

According to reports, NASA’s New Horizons spacecraft is closing in on the dwarf planet and the spacecraft will come closest to Pluto at 7:49 a.m. EST, which will lead to the closest image of Pluto to date.

Exactly how long and how far has the spacecraft mission been in the works? Project Manager Glen Fountain described it during a news briefing Monday morning stating “This 9 1/2-year journey to a tiny keyhole in space some 3 billion miles from Earth is the equivalent of a golfer on the East Coast hitting a ball across the continent and making a hole-in-one in Los Angeles.”

Officially discovered by 24-year-old Kansas man Clyde Tombaugh in 1930, “Planet X” as it was known was sought after by astronomers and casual observers alike for nearly 100 years prior to it’s actual discovery and naming.

Here’s a brief overview of Pluto’s best qualities:

So, while you may not be able to get a selfie with what was once considered the ninth planet in our solar system, you can figure out when to take a photo outside during pluto time in your neck of the woods in celebration of the day.

In the case that you can’t witness the historic spacecraft flyby as it happens, NASA plans to broadcast a celebration of the event from 7:30AM EST to 9:30AM EST. You can also stay in the loop by downloading the NASA’s Eye app and following the NewHorizonsBot on Twitter for images and updates.