NASA’s Curiosity rover took this picture of Mars. NASA
We have never been to Mars. But we have sent robots there. NASA’s Curiosity rover has been helping us learn more about Mars. Last month, it released (发布) a panoramic (全景) photo of Mars. The photo is made up of over 1,000 photos that were taken between Nov 24 and Dec 1, 2019. The total size of the image (影像) is 1.8 billion pixels (像素).