3 ms·

I believe you are seeing dust.

• ajuc 9y ago
  There is dust in the foreground and stars in the background. It's easy to distinguish because stars don't move relative to each other.
  • p0z3t 9y ago
    Someone posted it further up, but this stabilized gif really clarifies the difference well: https://twitter.com/landru79/status/988807933243863040 https://twitter.com/landru79/status/988807933243863040