History of Solar System formation and evolution hypotheses with Uranus having a 98° tilt. The Moon being relatively large with respect to the Earth and other moons which are in irregular orbits with respect to their planet is yet another issue. It is now believed these observations are explained by events which happened after the initial formation of the Solar System. Attempts to isolate the physical source of the Sun's energy, and thus determine when and how it might ultimately run out, began in the 19th century. At that time, the prevailing scientific view on the source of the Sun's heat was that it was generated by gravitational
Oberon (operating system) Linux Revival. A version of NO which uses Linux as a HAL and runs on x86, ARM, and MIPS.<br> OP2, The Portable Oberon-2 Compiler. OP2 was developed to port Oberon onto commercially available platforms.<br> PACO, (scope) PArallel COmpiler. Appears in A2. Compiles each scope in an independent thread. <br> RISC5, the CPU of Project Oberon 2013 based upon Wirth's RISC architecture. Not to be confused with RISC-V.<br> UnixAOS, Unix-based AOS.<br> WinAOS, Windows-based AOS.<br> Oberon (operating system) The Oberon System is a modular, single-user, single-process, multitasking operating system written in the programming language of the same name. It was originally developed