WASHINGTON — NASA's Cassini spacecraft is now on course for its last mission that will see it dive and disintegrate into Saturn's atmosphere on Friday.

Cassini has been traveling around Saturn and its moons for 13 years, but it is finally running out of fuel, so NASA wants the probe disposed of properly, Space.com reported.

The probe sped within 73,974 miles (119,049 kms) of Titan on Sept. 11 in a flyby meant to lower the spacecraft's orbit enough to ensure it will crash into Saturn's atmosphere, NASA officials said, according to Space.com.

The main purpose of this last mission is to make sure that Cassini does not contaminate the moons of Titan or Enceladus with Earth microbes.

Scientists think the two moons could possibly support life. Enceladus has an ocean of liquid water underneath its icy shell, as well as hydrothermal hot spots in the ocean.

Titan is also believed to have a subsurface water ocean. The moon also has lakes and seas of hydrocarbons on its surface.

Once Cassini enters Saturn's thick atmosphere, it will take approximately five to six minutes for the probe to fall apart and melt. During its last dive, the probe will be sending data back to Earth in real time for researchers to analyze.