Is it a bird, or a plane? No, it comet Siding Spring streaking across the sky, as seen by NASA Wide-field Infrared Survey Explorer, or WISE. An animation is available at the Photojournal.
Is it a bird, or a plane? No, it comet Siding Spring streaking across the sky, as seen by NASA Wide-field Infrared Survey Explorer, or WISE. An animation is available at the Photojournal.