NASA finally explains 'rainbow' on Mars captured by Perseverance rover An image captured by NASA's six-camera Perseverance rover appeared to show what looked like a "rainbow" on Mars, which would have required water droplets on a planet without rainfall Social media users speculated they could see a rainbow in the picture taken on Mars (Image: NASA/JPL-CALTECH/HANDOUT/EPA-EFE/REX/Shutterstock) The Daily Star's FREE newsletter is spectacular! Sign up today for the best stories straight to your inboxInvalid EmailSomething went wrong, please try again later. Sign up today! When you subscribe we will use the information you provide to send you these newsletters. Sometimes they’ll include recommendations for other related newsletters or services we offer. OurPrivacy Noticeexplains more about how we use your data, and your rights. You can unsubscribe at any time.