Spectacular! Let’s hope that Robert McNaught finds us “Siding Spring 2.” It would be huge in the sky — at least 10 times closer than any comet in all of recorded history.
Longtime comet fans will recall Comet Hyakutake (C/1996 B2), which passed close to Earth in 1996 — but still 100 times farther away than Siding Spring buzzed Mars. This means that Siding Spring 2 would be about 100 times wider on the sky than Hyakutake, cover 10,000 times more area on the sky, and move about 100 times faster.
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