A satellite launched last year returned a stunning image of Antarctica's frozen tundra. It appears to capture a hummingbird, but what is it really?
A newly published satellite image of Antarctica’s frozen tundra captured what looks like the plumage of a humble hummingbird in flight.
The NASA-ISRO Synthetic Aperture Radar, otherwise known as NISAR, is attached to a satellite developed by NASA and... [2594 chars]