NASA’s Van Allen Probe A, a 1,323-pound satellite launched 14 years ago to study Earth’s radiation belts, is expected to re-enter the atmosphere on Tuesday at around 7:45 p.m. EDT.

Most of the spacecraft will burn up during the fiery descent, though some components may survive, with the risk of harm to anyone on Earth estimated at roughly 1 in 4,200.

The probe and its twin, Van Allen Probe B, were designed to study the planet’s protective radiation belts, which shield Earth from solar storms and cosmic radiation.

The mission ended in 2019 when the satellites ran out of fuel, and higher-than-normal solar activity has accelerated the A probe’s re-entry ahead of its originally predicted 2034 date, NBC News has reported.

This event underscores the growing problem of space debris, which poses collision and safety risks for satellites and astronauts in low-Earth orbit.