Someone on one of my other boards suggested using MRO; though Mars is closer to Holmes, the brightness difference is less than a magnitude. Though I'd be interested in seeing a pic from said, myself, I don't think MRO could show us anything that larger earthbound telescopes haven't already. Its spectrometers might be able to throw us a few surprises, though...

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"Call me old-fashioned, but I think fire is magic. And it scares me a lot."

--The State