NASA’s Neil Gehrels Swift Observatory ended its science mission on October 20, as the spacecraft is orbiting at less than 275 km altitude. The greater atmospheric drag at this height affects the telescope's pointing stability.
"The Swift archive contains nearly 22 years of brightness measurements of all kinds of cosmic outbursts, multiwavelength spectra, more than 1.5 million images from its Ultraviolet/Optical Telescope, and much more."
You did well.
https://science.nasa.gov/missions/swift/nasas-swift-mission-ends/
28/n
NASA ScienceNASA’s Swift Mission Ends, Leaves Behind Scientific Bonanza - NASA ScienceNASA’s Neil Gehrels Swift Observatory has ended its science mission now that the spacecraft is orbiting less than 171 miles (275 kilometers) above Earth’s