Detailed analyses of last year’s impact on Jupiter by an asteroid was released by NASA on Thursday. By coincidence, Jupiter was impacted yet again on the same day by an unknown object. This time, the impact was caught on live video.

The impact happened at 20:31UTC June 3, 2010. It was first noticed by Anthony Wesley in Australia, who issued an alert. The discovery was immediately confirmed by Christopher Go in the Philippines, who happened to be taking a video of Jupiter in which the impact was caught live. The fact that the impact flash was captured by two independent observers separated thousands of kilometers from each other makes this discovery highly credible.

Wesley and Go are both dedicated amateur astronomers who observe Jupiter every night that the planet is visible from their back yards, and they both have track records of major discoveries. Wesley discovered the Jupiter impact last summer; Go first discovered the color change in Oval BA, a major vortex of Jupiter that turned red in 2006 and is now known as the Red Spot Jr.

When Ars reached Go at his home on the island of Cebu in the Philippines, he simply could not contain his excitement. “When Anthony issued the alert, I was just processing the video of Jupiter I just took, so I checked to see what I got," Go told Ars. "And there it is, I still can’t believe it, wow, it’s just amazing!”

The discovery image taken by Wesley is in red light, shown at top. The video captured by Go shows Jupiter through a blue filter, with a frame rate of approximately 60fps. The video shows the progression of the impact in real time, and the impact flash lasts about 1 second. “I was amazed by how quick the whole thing lasted," said Go. "I always imagined that these events took minutes or hours, but this flash lasted only for a few seconds."

Preliminary impressions on the video suggest that the impactor entered Jupiter from the westerly directions; a more conclusive answer must await detailed analysis.

As the news goes around the world, planetary scientists are asking all major telescopes round the world to be pointed at Jupiter for detailed analysis. We'll continue to cover this story as it develops.