By sheer coincidence, a programme to study it had just begun, so dozens of the world's telescopes - from visible to radio to gamma-ray - were watching.

BBC: Blazar Markarian 421's flare-up is cosmic coincidence

The world premier of an 82-inch Bravia prototype with wide-color gamma technology is set to deliver more realism via the full range of color.

ENGADGET: Live at the Sony press preview