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NASA Satellite Set for Early Return: Van Allen Probe A Expected to Re-enter Earth’s Atmosphere Sooner Than Anticipated
A veteran NASA satellite, the Van Allen Probe A, is expected to make an unscheduled return to Earth’s atmosphere this Tuesday, approximately at 7:45 p.m. ET. The 1,323-pound spacecraft, which spent nearly seven years studying our planet’s protective Van Allen radiation belts, is predicted to burn up upon re-entry.
While NASA anticipates most of the satellite will disintegrate, some components may survive the fiery descent. The space agency assures the public that the risk of harm to anyone on Earth is exceptionally low, estimated at roughly 1 in 4,200. Due to the unpredictable nature of re-entry, the actual time could vary within a 24-hour window before or after the projected time.
Launched in August 2012 alongside its twin, Van Allen Probe B, the spacecraft exceeded its initial two-year mission, operating for almost seven years. These probes provided invaluable data, helping scientists deepen their understanding of cosmic radiation and space weather’s impact on Earth. The mission officially concluded in 2019 when both satellites ran out of fuel, rendering them unable to orient themselves towards the sun.
Initially, experts calculated that Van Allen Probe A would re-enter the atmosphere in 2034. However, a more active-than-expected current solar cycle has accelerated its descent.
In 2024, scientists confirmed the sun had reached its solar maximum, leading to intense space weather events. These conditions significantly increased atmospheric drag on the spacecraft beyond initial estimates, resulting in its earlier-than-expected return.
The U.S. Space Force is actively monitoring the re-entry and providing updated projections. Meanwhile, its counterpart, Van Allen Probe B, is not expected to re-enter Earth’s atmosphere until 2030 or later.