The Neil Gehrels Swift Observatory, launched in November 2004, is one of humanity's most unique scientific instruments. This space observatory uses three telescopes simultaneously to do something no other observatory can: real-time observation of gamma-ray bursts (GRBs). Today, NASA is taking a massive leap to save it.
[IMAGE_PLACEHOLDER_1] Why This Mission Matters So Much The Neil Gehrels Swift Observatory, launched in November 2004, is one of humanity's most unique scientific instruments. This space observatory uses
three telescopes simultaneously—gamma-ray, X-ray, and UV/optical—to do something no other observatory can, not even the legendary Hubble or James Webb telescopes: real-time observation of gamma-ray bursts
(GRBs). Gamma-ray bursts are the most powerful events in the universe. These explosions originate from black hole births or neutron star collisions, releasing more energy in seconds than our sun will produce
in its entire lifetime. Over 22 years, Swift has detected more than 1,700 gamma-ray bursts, some from the observable edge of the universe—light that has traveled more than 13 billion light-years. Dr. Brad
Cenko, Swift's Principal Investigator at NASA, explains: "Swift is a unique telescope that has reinvented itself over the years. Building a new and improved Swift would cost around $250 million, while
this rescue mission is only $30 million—an exceptional bargain for science." The Solar Activity Problem: Why Swift Is Falling All low Earth orbit satellites face an invisible enemy: atmospheric drag. Even
at altitudes of 400 to 600 kilometers, Earth's upper atmosphere is so thin it's nearly a vacuum, yet enough particles remain to create a very weak drag force. This force gradually reduces a satellite's
orbital energy, causing it to fall. Under normal conditions, this process is extremely slow. Swift was placed at approximately 600 kilometers altitude in November 2004 and was expected to remain in orbit
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