Nasa telescope launched in 2004 to plunge back to Earth after failed rescue mission

NASA's Swift telescope, a defunct space observatory, is anticipated to re-enter Earth's atmosphere and descend to the ground on November 4. After initial efforts to prolong its life failed, the telescope was decommissioned on October 20. The 1.5-tonne observatory, launched in 2004 to study high-energy gamma-ray bursts, has detected at least 1,400 supernovas during its 22-year mission. While it may not be as well-known as Hubble or James Webb Space Telescopes, Swift has been invaluable for studying cosmic phenomena.

The telescope's exact landing location remains uncertain, as it is now uncontrolled and moving at around 8 kilometers per second. Predictions vary, with some sources estimating a re-entry time of 4:37am AEDT on November 4, while others suggest 8:11pm AEDT. The telescope's orbit could take it over various regions, including northern Australia, Africa, India, Southeast Asia, South-East Asia, South and Central America. If 70% of Earth is covered by ocean, three out of ten chances of the re-entry landing on land are likely.

Swift is expected to burn up upon re-entry, with some components, like dense tungsten parts or mirror components, potentially surviving. Dr Tucker, an astrophysicist, expressed sadness over the demise of the telescope, noting that it played a crucial role in gamma-ray astronomy and had a unique ability to observe in visible light, ultraviolet, and X-ray wavelengths. Hubble, another aging space telescope, is also predicted to make an uncontrolled re-entry in the near future.