Quick Read
- NASA’s retired Van Allen Probe A satellite is scheduled to reenter Earth’s atmosphere on March 10, 2026.
- The 1,300-pound spacecraft is expected to largely disintegrate, with a very low risk of human injury estimated at 1 in 4,200.
- Increased solar activity has expanded Earth’s atmosphere, accelerating the orbital decay of the satellite beyond initial expectations.
WASHINGTON (Azat TV) – A retired NASA spacecraft, the 1,323-pound (600-kilogram) Van Allen Probe A, is expected to reenter Earth’s atmosphere on Tuesday, March 10, 2026. According to the U.S. Space Force and NASA, the satellite is reaching the end of its orbital life after nearly 14 years, a descent accelerated by increased solar activity that has expanded the upper atmosphere and heightened frictional drag.
Understanding the Van Allen Probe A Mission
Launched in August 2012 alongside its twin, Van Allen Probe B, the spacecraft was designed to conduct a two-year mission studying the intense radiation belts surrounding Earth. The data gathered by these probes provided critical insights into how solar activity affects space weather, astronaut safety, and terrestrial infrastructure such as power grids and communication networks. While both satellites were officially deactivated in 2019, they remained in orbit as legacy assets. Space.com reports that while Probe A is now undergoing its final descent, its twin, Probe B, is not expected to reenter the atmosphere until at least 2030.
Reentry Risks and Safety Projections
NASA officials have confirmed that the vast majority of the satellite is expected to disintegrate upon reentry due to the extreme heat generated by atmospheric friction. While some dense components may survive the thermal stress, the probability of any debris causing harm to people on the ground remains statistically negligible. NASA estimates the risk of injury to a human being at approximately 1 in 4,200. Because 70 percent of the Earth’s surface is covered by water, experts emphasize that any surviving fragments are highly likely to splash down in uninhabited ocean regions rather than near populated areas.
The Impact of Solar Activity on Orbital Decay
The early reentry of Probe A, which was originally anticipated to remain in orbit for a longer duration, highlights the dynamic nature of low-Earth orbit. Recent cycles of heightened solar activity have caused the Earth’s atmosphere to swell, creating more drag on objects in orbit. This phenomenon has forced aerospace agencies to recalibrate their disposal timelines for aging satellites. The current tracking efforts, coordinated by the U.S. Space Force, are providing real-time updates on the satellite’s trajectory, with a predicted reentry window centered around 7:45 p.m. EDT, subject to a 24-hour variance.
The premature descent of the Van Allen Probe A underscores the growing complexity of space traffic management; as solar cycles become more unpredictable, the ability to accurately forecast the lifespans of retired satellites becomes not just a matter of scientific interest, but a necessity for maintaining the safety of the increasingly congested orbital environment.