Cygnus X-1 Extreme Spin
Uses X-ray continuum fitting to infer that the Cygnus X-1 black hole rotates with a near-extreme dimensionless spin.
Permanent historical records · Updated 2026-11-03
2011 in China
Explore 1 historical events and records for China in 2011.
Historical records for China in 2011
Sorted by month and day. Records with no month are shown last. Showing 1 of 1 unique records.
1Unique records
1 of 1Page
1Named events on this page
1Named people on this page
0Places on this page
Other events (month unknown)
How these records were prepared
Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.