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) PC-Native Oberon. Other versions of the Oberon System, i.e. without "Native" in the name, had partially modified interfaces of low level modules. In 2015 Peter Matthias revitalized LNO under the Name OLR (Oberon Linux Revival) as a multi-platform Distribution running seamlessly under Intel x86, RISC-V, MIPS, and ARM. It runs nicely on the Raspberry Pi and on the inexpensive CHIP computer; with some tweaking (adjusting group membership or/and permissions on some devices) it runs nicely under Tiny Core Linux. OLR interfaces with Linux kernel by direct System calls. OLR currently (mid 2017) misses a network layer. In 2013 Niklaus Wirth