远离小行星贝努的彩排

NASA’s OSIRIS-REx is ready for touchdown on asteroid Bennu. On Aug. 11, the mission will perform its “Matchpoint” rehearsal – the second practice run of the Touch-and-Go (TAG) sample collection event. The rehearsal will be similar to the Apr. 14 “Checkpoint” rehearsal, which practiced the first two maneuvers of the descent, but this time the spacecraft will add a third maneuver, called the Matchpoint burn, and fly even closer to sample site Nightingale – reaching an altitude of approximately 131 ft (40 m) – before backing away from the asteroid.

This artist’s rendering shows OSIRIS-REx spacecraft descending towards asteroid Bennu to collect a sample of the asteroid’s surface.

Image Credit: NASA/Goddard/University of Arizona

NASA的OSIRIS-RE（Origins Spectral Interpretation Resource Identification Security Regolith Explorer，起源、光谱解释、资源识别、安全风化层探测仪）已准备好在小行星贝努上着陆。8月11日，任务将进行“ Matchpoint”演练，这是Touch-and-Go（TAG）样本采集活动的第二次练习。演练类似于4月14日的“检查点”演习，该演习进行了下降的前两次演习，但是这次飞船将进行第三次演习，称为Matchpoint燃烧，并飞近采样地点夜莺——在从小行星后退之前，到达约131英尺（40 m）的高度。

这幅艺术家的渲染图展示了OSIRIS-REx航天器降落到小行星贝努，以收集小行星表面的样本。

影像来源：NASA/Goddard/University of Arizona