NASA's Neil Gehrels Swift Observatory has ended its science mission now that the spacecraft is orbiting less than 171 miles (275 kilometers) above Earth, where atmospheric drag keeps its telescopes from holding steady on targets; its final observation was on Oct. 20. NASA
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
Which of Swift's discoveries do you think will matter most, and what will replace its rapid-response gamma-ray burst work?
