Watching a crater being formed on the Moon.

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Elroch

Today's APOD shows the visible light from a large meteorite hitting the Moon during a lunar eclipse, clearly visible in a telescope image.

Apparently, last September, the largest such example was observed, a 400 kg rock moving at about 18 km/s which made an explosion that stayed visible as a glow for 8 seconds and made a crater about 40 meter across.

Kookaburrra

Great video