Science operations for the Far Ultraviolet Spectroscopic Explorer (FUSE) mission ceased on Dec. 10 when the second of four reaction wheels, used to precisely point and maintain the spacecraft’s ...

NASA's Far Ultraviolet Spectroscopic Explorer astronomy satellite is back in full operation, its aging onboard software control system rejuvenated and its mission extended by enterprising scientists ...

NASA’s Far Ultraviolet Spectroscopic Explorer astronomy satellite is back in full operation, its aging onboard software control system rejuvenated and its mission extended by enterprising scientists ...

投资者可以进行盘前（美国东部时间上午 4:00 - 9:30） 和盘后（美国东部时间下午 4:00 - 8:00） 交易。做市商和 ECN 严格自愿参与，因此，这些时段的流动性和价格会比较低。在这种环境下，股票价格也可能波动更快。强烈建议在此期间参与交易的投资者使用限价单。