NASA's Swift Observatory set to re-enter Earth's atmosphere after failed orbit boost

NASA's Swift Observatory, launched nearly 22 years ago, is about to fall back to Earth after attempts to raise its orbit failed. The agency expects re-entry around 3:30 a.m. ET on Wednesday, with a margin of error of about 11 hours. Most of the spacecraft is expected to burn up during descent, though some components may survive. The telescope weighs roughly 3,200 pounds and is about 18 feet tall, with a width of about 18 feet that includes its deployable solar arrays.
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