The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2]
This picture is no good. The dust tail lags behind. If the comet moves from nottom left to top left, the dust tails on the top of the picture should point to upper right.
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