Date of sighting: July 4, 2013
Location of sighting: Earths Sun
These huge spherical UFO's started being noticed back in January of 2010. They are on both the forward and rear images taken by NASA's Stereo Spacecraft in space. They appear to be moving as they are in different positions on many photos. Remember these are huge possibly at least the size of Earth. Further, if they were planets or some type of huge asteroid comets, they would already have been pulled into the sun by the strong gravity the sun produces as in the case of the recent comet.
Notice also that they are reflecting the suns light just like a metal constructed ship would do.
Our best guess is that these are huge planet sized spacecrafts are either observing the sun, or harvesting the energy from our sun. Either way, we await NASA's official explanation.