Jakarta, INTI - NASA’s Van Allen Probe A reentered Earth’s atmosphere on Wednesday, March 11, at 06:37 Eastern Time (around 17:37 WIB), nearly 14 years after it was launched in August 2012.
Earlier Than Expected Reentry
The United States Space Force confirmed that the spacecraft entered the atmosphere over the eastern region of the Pacific Ocean. The estimated reentry location was near 2 degrees south latitude and 255.3 degrees east longitude.
NASA stated that most parts of the spacecraft likely burned up as it passed through Earth’s atmosphere. However, some components may have survived the intense heat during reentry.
The event occurred several years earlier than scientists had originally predicted. When the mission officially ended in 2019, researchers estimated that the spacecraft would not reenter Earth’s atmosphere until around 2034.
However, stronger-than-expected solar activity during the current solar cycle increased atmospheric drag. This additional drag accelerated the spacecraft’s orbital decay, causing Van Allen Probe A to fall back into Earth’s atmosphere sooner than anticipated.
Mission to Study Earth’s Radiation Belts
Van Allen Probe A was one of two twin spacecraft launched by NASA to study the Van Allen radiation belts, a region of charged particles trapped by Earth’s magnetic field.
These radiation belts act as protective shields that help defend the planet from harmful cosmic radiation and solar storms.
The twin spacecraft, Van Allen Probe A and Van Allen Probe B, conducted scientific observations from 2012 until the mission concluded in 2019.
During their operational period, the probes collected extensive data about Earth’s radiation environment. Scientists also discovered that a temporary third radiation belt can form during periods of intense solar activity.
Important Contributions to Space Weather Research
According to NASA, data from the Van Allen Probe mission continues to support scientists in improving their understanding of space weather.
This knowledge is crucial for assessing the impact of space weather on satellites, astronauts, and technological systems on Earth. Systems that can be affected include communications networks, navigation systems, and electrical power grids.
NASA also noted that the second spacecraft, Van Allen Probe B, is not expected to reenter Earth’s atmosphere until sometime after 2030.
Conclusion
The reentry of Van Allen Probe A marks the end of a mission that significantly advanced scientific understanding of the Van Allen radiation belts and space weather. Data collected by the spacecraft continues to support research on how solar activity affects satellites, astronauts, and critical technological systems on Earth.
Read more: Meta Blocks 150 Thousand Accounts Related to Scam Network in Southeast Asia