During a large coronal mass ejection from the sun last week, NASA’s STEREO spacecraft spotted a mysterious planet-sized object orbiting Mercury. Check it out

Head NRL group scientist Russ Howard and lead ground systems engineer Nathan Rich say the mysterious object is in fact Mercury itself. And what we’re seeing in the footage is the equivalent of Mercury’s wake, “where the planet was on the previous day,” as it travels through the solar system on its natural gravitational path.

[Yahoo]