In a first, scientists observe a comet reversing its spin

The comet originated in the outer solar system and visits the inner solar system every 5.4 years.
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Astronomer reports comet may have stopped spinning and reversed rotation

Astronomers studying Comet 41P/Tuttle-Giacobini-Kresak have reported evidence that the small icy body may have done something ...
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NASA’s Hubble Detects First-Ever Spin Reversal of Tiny Comet

Astronomers using NASA’s Hubble Space Telescope have found evidence that the spinning of a small comet slowed and then reversed its direction of rotation, offering a dramatic example of how volatile ...