The image above is a close-up of a new "photonic solid" invented by Princeton physicists; think of it as a semiconductor of light, rather than electricity.
The ASTER team released this image in June 2009 to promote its new global digital elevation model, which remains the most complete and consistent data set of its kind.
3
一种新型隐形轰炸机的图片和视频也在网上公布。
Photos and videos of the new stealth bomber were published on the Internet.