Solar System 7 light-years away. Compared to many other planetary systems, the Solar System stands out in lacking planets interior to the orbit of Mercury. The known Solar System also lacks super-Earths (Planet Nine could be a super-Earth beyond the known Solar System). Uncommonly, it has only small rocky planets and large gas giants; elsewhere planets of intermediate size are typical—both rocky and gas—so there is no "gap" as seen between the size of Earth and of Neptune (with a radius 3.8 times as large). Also, these super-Earths have closer orbits than Mercury. This led to hypothesis that all planetary systems start
Solar hot water in Australia at least one of the following concession cards: Following to the installation, the householder has up to three months to send in the application to receive the rebate if the below criteria is met. The water heating system does not replace existing one: The water heating system does replace existing one: No Rebates other than the Federal Government's are offered by the Tasmanian Government at the moment. Sustainability Victoria’s solar hot water program, sponsored by the Victorian government, offers rebates to householders who have installed a system abides that the following criteria: New houses and buildings can get a rebate