NASA’s Swift mission will soon meet a fiery end, after more than two decades of ground-breaking science.

NASA will lose a major tool in its astronomical arsenal this week: The Neil Gehrels Swift Observatory , hunter of enigmatic gamma-ray bursts, is about to succumb to atmospheric drag. The suite of space telescopes will burn up harmlessly in Earth’s atmosphere on November 4th.

The reentry is currently projected to occur early on the morning of Wednesday, November 4th, around 5:47 a.m. EST (10:47 UT), give or take five hours, as per NORAD’s U.S. Combined Space Operations Center Space-Track predictions.

Orbiting Earth once every 90 minutes, Swift is in a 20.5-degree inclination orbit.…