re: India: Explosive Fireball Seen In Sky
If it is a meteor it will have been detected by space and ground-based detectors:
Observation of Meteoroid Impacts by Space-Based Sensors.
Mercury, November/December 1998 Table of Contents.
Edward Tagliaferri
http://www.astrosociety.org/pubs/mercury/9806/impact.html
Listening for Nukes: A Meteor Detection Project
By Robert Roy Britt
Senior Science Writer
posted: 07:00 am ET
24 May 2001
The US Air Force used to announce such detections but after a web search I haven't found any announcements more recent than 2001:
News Releases - Air Force Technical Applications Center.
http://www.fas.org/irp/agency/aftac/news/index.html
Bob Clark