
The ABE (Autonomous Benthic Explorer) has used its on-board acoustic transponders and five thrusters to scan the seafloor for over 15 years - locating, mapping, and photographing hydrothermal vents, volcanoes, and other features of the great deep. Marked with "NCC1701" due to its resemblance to Captain Kirk's ship, ABE has performed more than 200 missions collecting valuable data for researchers worldwide. But something went wrong last Friday on an expedition off the coast of Chile and ABE just stopped - nothing was ever heard again. No word yet on whether ABE can be located or recovered.
Gallery: Samsung NaviBot SR8845 and SR8855 hands-on
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Steven Hawking chimes in on the debate about whether to spend valuable resources sending humans on planetary exploration missions, or to use robots. After all, it's a lot cheaper to send a machine that doesn't need oxygen, isn't sensitive to radiation, and doesn't need to be returned to their family at the end of the mission. But there are some legitimate scientific reasons to send humans including real-time tweaking of the chemistry experiments looking for life, and to initiate unplanned tests based on unexpected observation. Also, the tax-paying public gets more emotionally invested in human missions and would possibly be more willing to continue funding. The ultimate answer is likely a mixture of the two, but exactly what that mixture will be is still being hotly debated.