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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.

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 space agency gave it the OK. A famous astronaut says he'd get involved. They even tested a prototype in a wind tunnel. Still, it does sound nearly too off-the-wall to be true: Japanese scientists have teamed up with origami experts to design a paper airplane that could withstand re-entry and make its way from space back to Earth.

This Saturday, Japan launched a satellite, Kizuna. If all goes well, starting in July Kizuna will provide commercial users with the fastest Internet on Earth. Less speedy is the faster-than-fiber-optic connection speeds that the average user can access with just an 18-inch-wide dish. Those speeds will be available to offices and homes in remote areas, places that dont have the necessary telecommunications infrastructure.