NEW YORK, July 4 (Xinhua) -- U.S. President Donald Trump signed his landmark policy bill, the One Big Beautiful Bill, into law on Friday afternoon.

U.S. President Donald Trump speaks on the balcony of the White House in Washington, D.C., the United States, on July 4, 2025.

公众支持是NASA的生命线。大美法案支持发现号搬迁可能在德州激发航天热情，但如果被视为政治交易，象征意义将大打折扣。NASA需要通过火星采样返回、月球登陆等标志性成就，重燃公众对深空探索的支持，否则预算争夺将愈发艰难。