Chandra Observes Andromeda Core
NASA's Chandra X-ray Observatory obtains a deep view of the M31 nucleus and surrounding X-ray sources, including emission near the central black hole position.
Permanent historical records · Updated 2026-11-03
1999 in United States
Explore 1 historical events and records for United States in 1999.
Historical records for United States in 1999
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
0Named people on this page
1Places on this page
October
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.