Juno is finally closing in on Jupiter.
After traveling for five years, NASA’s spacecraft is expected to reach the gas giant on Monday and stay in its orbit for at least a year. NASA will know the mission is a success when it hears a three-second beep that’s supposed to come in at approximately 11:53 p.m.
The probe will first place itself in the “capture orbit” by burning its rocket motor for 35 minutes. Then, it’ll take nearly three months to reach its final orbit.
Juno will begin to collect data about 50 hours after entering the first orbit level. The probe will use its JunoCam to study the structure and evolution of Jupiter and its four biggest moons (Europa, Io, Callisto and Ganymede) by taking measurements and images.
Scientists will try and gather information on how much water is inside the planet, which could lead to learning about how much water was present in the solar system’s early days. Other things that will be studied include Jupiter’s terrain and radiation.
Juno already managed to take a shot of the planet and its moons on June 21, but from a distance of 6.8 million miles away. More data will be returned to Earth and released to the public by late August or early September.
The entire mission is currently scheduled to end in October 2017, but it might be extended a bit longer — it all depends on the probe’s status and Jupiter’s radiation. NASA will end the mission by crashing the probe into Jupiter’s atmosphere, which will take about 5.5 days.