Daniel Fischer@cosmos4u@scicomm.xyz

What happens when the Sun moves behind a distant smoking chimney ... as observed today during #sunset in Bochum, Germany.

The situation before the Sun touched the chimney
The situation before the Sun touched the chimney
Exhaust from the chimney in front of the Sun
Exhaust from the chimney in front of the Sun
Exhaust backlit by the setting Sun
Exhaust backlit by the setting Sun
Sun almost gone
Sun almost gone
Daniel Fischer@cosmos4u@scicomm.xyz

Replying to @⁨cosmos4u@scicomm.xyz⁩

Another #Bochum (Germany) #sunset today - and numerous times a tiny #GreenSegment separated from the disk: here are two pictures each of two such cases.

One segment, timestep 1
One segment, timestep 1
One segment, timestep 2
One segment, timestep 2
Another segment, timestep 1
Another segment, timestep 1
The other segment, timestep 2
The other segment, timestep 2
Daniel Fischer@cosmos4u@scicomm.xyz

Replying to @⁨cosmos4u@scicomm.xyz⁩

Third #Bochum #sunset in a row, on 24 August, now perfectly clear - the Sun right *on* the horizon was way too bright to look at - and with obvious #sunspots: according to spaceweather.com/images2026/24 these are the activity regions (1)4513 and 4517.

Contrast optimized for the sunspots
Contrast optimized for the sunspots
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