Mosby Glacier is a glacier

Glacier

A glacier is a large persistent body of ice that forms where the accumulation of snow exceeds its ablation over many years, often centuries. At least 0.1 km² in area and 50 m thick, but often much larger, a glacier slowly deforms and flows due to stresses induced by its weight...

 5 nautical miles (9 km) wide at its mouth, flowing in a southeast direction to the northwest corner of New Bedford Inlet

New Bedford Inlet

New Bedford Inlet is a large pouch-shaped, ice-filled embayment between Cape Kidson and Cape Brooks, along the east coast of Palmer Land. Discovered and photographed from the air in December 1940 by members of the United States Antarctic Service , and named after New Bedford, Massachusetts, the...

, on the east coast of Palmer Land

Palmer Land

Palmer Land is that portion of the Antarctic Peninsula which lies south of a line joining Cape Jeremy and Cape Agassiz. This application of Palmer Land is consistent with the 1964 agreement between US-ACAN and UK-APC, in which the name Antarctic Peninsula was approved for the major peninsula of...

. Discovered and photographed from the air in December 1940 by the United States Antarctic Service (USAS). During 1947 it was photographed from the air by the Ronne Antarctic Research Expedition

Ronne Antarctic Research Expedition

The Ronne Antarctic Research Expedition was an expedition from 1947-1948 which researched the area surrounding the head of the Weddell Sea in Antarctica.-Background:...

 (RARE) under Ronne, who in conjunction with the Falkland Islands Dependencies Survey (FIDS) mapped its terminus from the ground. Named by the FIDS for Hakon Mosby, Norwegian meteorologist and oceanographer.