A decade after helping scientists unlock secrets about Earth’s radiation environment, a NASA research satellite is preparing for its final descent. Van Allen Probe A, one of two spacecraft launched to study radiation surrounding Earth, is expected to fall back into the planet’s atmosphere in March 2026.
Officials said most of the 600-kilogram satellite will burn up due to extreme heat and friction during reentry. However, experts warned that a few stronger parts of the spacecraft may survive the journey and reach the surface.
The US Space Force predicts the spacecraft will re-enter the atmosphere around 7:45 pm EDT (5:15 am IST the next day) on March 10, 2026, although the exact time could change as scientists continue tracking the satellite’s path.
Despite the dramatic return, the chances of the falling debris causing harm remain extremely low.
Van Allen Probe A Crash Today: What is the Van Allen Probe A Mission?
NASA launched Van Allen Probe A and its twin Van Allen Probe B in 2012 from Cape Canaveral in Florida. The spacecraft were designed to study the Van Allen radiation belts, which are zones of charged particles trapped by Earth’s magnetic field.
These radiation belts play an important role in space weather and can affect satellites, astronauts, and even technology on Earth.
The probes were originally expected to operate for about two years. However, both spacecraft exceeded expectations and continued gathering scientific data for nearly seven years.
During that time, the mission provided valuable insights into how radiation behaves around Earth and how solar activity influences the planet’s magnetic environment.
Van Allen Probe A Reentry: Why the NASA Satellite Is Returning Earlier Than Expected
Scientists initially believed the spacecraft would remain in orbit until around 2034. However, changes in the space environment altered its trajectory.
In recent years, the Sun entered a period of increased activity known as solar maximum, the peak phase of the solar cycle. This surge in solar activity strengthened space weather and expanded Earth’s upper atmosphere.
As a result, atmospheric drag increased and slowly pulled the satellite closer to Earth. Over time, this drag reduced the spacecraft’s orbit and accelerated its descent.
By 2024, researchers confirmed that the Sun had reached solar maximum, which significantly influenced the satellite’s orbit and caused it to fall toward Earth earlier than predicted.
Van Allen Probe A Reentry Tracking Link
The biggest question remains where the debris will eventually fall. At this point, NASA cannot accurately predict the exact location where the remains of the 1,323-pound spacecraft might land.
However, people can track the current position of Van Allen Probe A through a real-time satellite map available on N2YO.com, a satellite tracking platform. According to the tracking data, the spacecraft’s orbit currently takes it over regions including the northern edge of South America, parts of Central Africa, and Indonesia.
Van Allen Probe A Reentry: Could Satellite Debris Hit Earth?
As Van Allen Probe A plunges into Earth’s atmosphere, intense heat will destroy most of its structure. Still, experts believe a few durable fragments may survive the fiery descent.
Officials say the risk to people remains extremely small. According to NASA estimates, “the odds of someone being harmed are roughly 1 in 4,200.”
Scientists emphasise that most uncontrolled satellite reentries occur safely because large portions burn up before reaching the ground.
What Happens to the Second Van Allen Probe?
While Probe A prepares for reentry, its twin spacecraft continues to orbit Earth. Van Allen Probe B remains operational in space and is expected to stay in orbit for several more years before eventually descending later this decade.
The twin satellites together delivered groundbreaking observations about radiation storms and the behaviour of charged particles around Earth. Their findings have helped scientists improve predictions of space weather and protect future satellites.
As Probe A completes its final journey, it marks the end of one of NASA’s most successful missions studying Earth’s radiation belts, leaving behind years of valuable data that continues to shape our understanding of near-Earth space.
