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) 2002.<br> BB, BlackBox Component Builder. Component Pascal IDE from Oberon Microsystems.<br> Bluebottle OS, And again another name for the Active Object System, 2003.<br> BRAM, Block Addressable Random Access Memory, as used in the FPGA machine.<br> CP, Component Pascal. A dialect in the Oberon family most similar to Oberon-2.<br> ETHO, Oberon as developed at Eidgenössische Technische Hochschule (ETH) Zürich.<br> Fox, The compiler for Active Oberon, appearing in AOS (= A2 = Bluebottle).<br> LEO, Linux ETH Oberon. ETHO 2.4.3 for Linux x86.<br> LNO, Linux Native Oberon.<br> NO, Native Oberon. Oberon running on bare hardware rather than atop another operating system.<br> OLR, Oberon