B "Snow" on comet 67P/Churyumov-Gerasimenko is actually stars

[Keith_McClary]

TL;DR Summary

"Snow" on comet 67P/Churyumov-Gerasimenko is actually stars.

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9.) Snowy weather on comets. The ESA’s Rosetta mission witnessed cometary “snow” firsthand.

The most spectacular movie from ESA's Rosetta mission shows what the surface of comet 67P/Churyumov-Gerasimenko looks like, including the volatile ices that sublimate and re-freeze when they're in sunlight or shadow, respectively, causing this snow-like behavior.
ESA/Rosetta/NAVCAM

However, landru79 (twitter) has rearranged the frames to show that most of the falling "snow" is actually background stars.

 

[Vanadium 50]

The snow that is not stars is snow. Is this unclear?

 

[DennisN]

Summary:: "Snow" on comet 67P/Churyumov-Gerasimenko is actually stars.

Snowy weather on comets. The ESA’s Rosetta mission witnessed cometary “snow” firsthand.

Amazing clip!

 

[davenn]

Summary:: "Snow" on comet 67P/Churyumov-Gerasimenko is actually stars.

This statement is, of course, incorrect

The snow that is not stars is snow. Is this unclear?

Exactly, the background points of light are mostly stars. The fast moving foreground streaks are the "snow" icy volatiles

 

[sophiecentaur]

This statement is, of course, incorrect

To be quite honest, the stuff in the initial movie that looks like snow is not snow. We don't see the 'real snow' looking like it does - except perhaps in a short film clip when we're driving though it? A very easy mistake. It needed the image processing to resolve the confusion - cleverly done, imo.