kaguya

The moon may be a harsh mistress, but lately she has been giving up her secrets. Scientists have spotted a deep hole in the lunar surface that goes at least 260 feet down and is believed to open into an underground tunnel more than 1,200 feet wide.

The discovery is powerful evidence for long, winding tunnels carved by lava beneath the lunar surface. Such tunnels, whose existence has long been hypothesized, could provide shelter for future astronauts or colonists against the harsh radiation and surface temperatures on the moon.

Before its planned end-of-life crash landing, which it broadcasted dutifully in HD, Japan's Kaguya lunar craft used its gamma ray spectrometer to find the "first conclusive evidence" of uranium on the lunar surface.

The Japan Space Agency's Kaguya lunar explorer, after a mission that included new geological surveys and lots of gloriously detailed HD footage of the moon's surface, crash landed into a large crater on the moon's near side this week. And JAXA today released its final images, depicting the final moments of its descent. Updated with video.

Japan's Kaguya lunar surveyor craft has sent back fresh HD clips as its orbit slowly degrades, bringing it closer than ever to the surface. In two days it will crash-land, bringing its mission to an end, but until then, it's keeping the ultra-crisp, almost surreal lunar footage coming.