Planet Nine Planet Nine Planet Nine is a hypothetical planet in the outer region of the Solar System. Its gravity could explain the unlikely clustering of orbits for a group of extreme trans-Neptunian objects (eTNOs) that orbit beyond Neptune with average distances greater than 250 AU. These eTNOs tend to have their points of closest approach to the Sun clustered in one direction, and many of their orbits have a similar tilt. This evidence suggests that the gravity from a large undiscovered object is influencing the orbits of the most distant known Solar System objects. This undiscovered super-Earth-sized planet would have an
Solar art prize Solar art prize The Solar art prize is an annual art exhibition hosted by the Royal Society of the Arts, South Australia. The prize was established by Pip Fletcher in 2010, and has consistently invited artists to respond to the subject of climate change. The event's recurring theme is "Caring for Our Planet". Artists are invited to submit new works for consideration, and various prizes are offered. Prizes include cash and sponsor offerings, including tens of thousands of dollars in credits to be redeemed on solar power system services and installations, which include solar panels, hot water systems and batteries.