A Swedish research robot submarine detects unknown structures beneath Antarctica’s Dotson Ice Shelf, and the find suggests ice shelf’s underside is more complex than expected

When researchers sent a bright orange robot submarine under Antarctica’s Dotson Ice Shelf, into one of Antarctica’s least accessible ice-shelf cavities, they didn't expect it to reveal a hidden landscape far more complex than previously understood. Nor did they anticipate the robot would disappear under the ice two years later and never return.

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