TerreStar Corporation
（重定向自Motient）
TerreStar Corporation (TSTR), formerly Motient Corp. (MNCP - 2000-2007) and American Mobile Satellite Corp. (AMSC - 1988-2000), was the controlling shareholder of TerreStar Networks Inc., TerreStar National Services, Inc. and TerreStar Global Ltd., and a shareholder of SkyTerra Communications.