![](http://www.ecns.cn/hd/2020/10/21/efd1c91b4c94495ea5979710d9794b48.jpg)
NASA's OSIRIS-REx spacecraft captured this image of the Nightingale site on asteroid Bennu, April 29, 2020. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/10/21/fb590656e3f84fbc9feb24115c34d4fd.jpg)
Photo shows sample site Nightingale, OSIRIS-REx’s primary sample collection site on asteroid Bennu. The image is overlaid with a graphic of the OSIRIS-REx spacecraft to illustrate the scale of the site. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/10/21/a29bdefa01524467adba8ced2444d9b8.jpg)
Photo shows the sampling arm of the OSIRIS-REx spacecraft during a rehearsal for an approach to the "Nightingale" sample site on the surface of the asteroid Bennu. (Photo/Agencies)