It took almost five years and $1.1 billion to travel the 1.8 billion miles to reach the largest planet in our solar system, CNN reported.
The probe is as big as a basketball court, will orbit Jupiter 37 times and is laden with expensive equipment, including three Lego figurines, according to Space.com. They are modeled after the Roman god Jupiter, his wife Juno and Galileo Galilei.
The probe, which launched from Cape Canaveral Air Force Station in 2011, is designed to understand the origin and evolution of Jupiter. Previous probes, such as the Galileo, have been unable to pierce the planet's thick atmosphere to scan the surface.
Juno, as declared on its Twitter account, aims to remedy that.