A meteor has slammed into the moon causing an explosion so large it was visible to people on Earth, according to NASA.
The explosion took place on March 17 and NASA's Meteoroid Environment Office said yesterday that it was the brightest impact seen on the moon since the monitoring program began eight years ago.
Scientists believe the boulder-sized meteor was travelling at 90,000km/h when it smashed into the Moon and created a 20m-wide crater.
The explosion lasted for only one second but caused a flash as bright as a fourth magnitude star.
"We have seen a couple of others in the "wow" category but not this bright," Robert Suggs, manager of NASA's Lunar Impact Monitoring Program in the US state of Alabama, told National Geographic.
NASA's monitoring program has recorded 300 lunar impacts so far.