美股太空概念股盘前反弹，火箭实验室涨0.5%

Group 1 - The core viewpoint of the article highlights a pre-market rebound in U.S. space concept stocks, indicating positive market sentiment in this sector [1] - Rocket Lab experienced a 0.5% increase in its stock price, reflecting investor confidence in its operations and future prospects [1] - AST SpaceMobile saw a 1.5% rise, suggesting growing interest and optimism regarding its business model and potential market impact [1] - The "SpaceX concept fund" DXYZ rose by 1.4%, indicating a favorable outlook for investments related to SpaceX and its associated ventures [1]