A mission that outlasted its design
Launched on November 20, 2004, the Swift observatory was originally designed for a two-year primary mission. However, the mission spanned more than two decades, lasting just a few days short of 22 years. The $500 million satellite weighed approximately 3,200 pounds (1,452 kilograms).
Swift was primarily designed to study gamma-ray bursts, which are described by NASA as the "most powerful explosions in the cosmos." Using a multi-wavelength array of three telescopes, the observatory could automatically detect these bursts and alert observatories worldwide to coordinate follow-up observations.
According to NASA, Swift's scientific contributions include:
- Observing more than 2,000 gamma-ray bursts.
- Studying more than 1,400 supernovae.
- Observing stellar X-ray flares, active galaxies powered by supermassive black holes, asteroids, and comets.
- Contributing to approximately 7,000 published scientific papers.