Telescope operator says 'encouraging preliminary result' detected from Chile

Rodrigo Palominos, a telescope operator at the Paranal Observatory in Chile, says earlier this morning there was an impact of the upper stage of the Falcon 9 rocket. He tells Radio 4's Today programme that at the predicted time of impact, he detected a change in some emission lines - bright lines of light - which were not present before. Palominos say it's an "encouraging preliminary result" which may indicate material released by the collision.