NASA's Swift Observatory may make a fiery return to Earth around Friday after more than two decades studying gamma-ray bursts.

An aging NASA telescope is barely clinging to space after a failed rescue effort left it tottering lower and lower. The U.S. Space Force predicts the Swift Observatory will come crashing down on or around Friday.

It's unclear at the moment exactly when and where the Swift observatory will plunge to Earth. But researchers definitely have their eyes peeled.

A NASA telescope is barely clinging to space after a failed rescue effort left it tottering and sinking toward Earth. A few pieces that don't burn up in the atmosphere are expected to land in the ocean on or about Friday.