A close look at some key evidence in the Gaza Hospital blast. #NYT

The video shows a projectile streaking through the darkened skies over Gaza and exploding in the air. Seconds later, another explosion is seen on the ground.

The footage has become a widely cited piece of evidence as Israeli and American officials have made the case that an errant Palestinian rocket malfunctioned in the sky, fell to the ground and caused a deadly explosion at Al-Ahli Arab hospital in Gaza City.

But a detailed visual analysis by The New York Times concludes that the video clip — taken from an Al Jazeera television camera livestreaming on the night of Oct. 17 — shows something else. The missile seen in the video is most likely not what caused the explosion at the hospital. It actually detonated in the sky roughly two miles away, The Times found, and is an unrelated aspect of the fighting that unfolded over the Israeli-Gaza border that night.