Astronomical autumn begins, warmth persists

Astronomical autumn began across the Northern Hemisphere at the September equinox, but daylight and night were not exactly equal and warm weather persisted in parts.

Reposted by Colette L. Heald

30%

Scholar power: 30.8%

Story's scientific field profile

Environmental science 48%, Physics 28%, Geography 24%

Name	Field match	H-index	Scholar power
🎓 Colette L. Heald	36%	73	30.8%

Formula for scholar power: sum of each reposter's field match × √reposter's h-index

Ranking score inputs

Relevance

Recency

Reposts

Scholar power

50.0%

16.6 h

30.8%

Ranking score

0.068

Formula for ranking score (post): scholar_power × max((total_reposts)^(1/3), 1) × (1 / max(hours_since_posted, 1)) × (raw_relevance)^3

Canadian Paintings

@canadianpaintings.bsky.social

Autumn in Algonquin
Arthur Lismer
1914

September 22, 2026 at 11:01 PM

Reposted by Daniel W. Drezner

Scholar power: 3%

Story's scientific field profile

Environmental science 48%, Physics 28%, Geography 24%

Name	Field match	H-index	Scholar power
🎓 Daniel W. Drezner	-	45	-

Ashmolean Museum, Oxford

@ashmoleanmuseum.bsky.social

The autumn equinox is here in the northern hemisphere, meaning that the new season has officially begun.

This woodblock print by Hiroshige captures the colours and feeling of autumn beautifully.