460–370 BC) believed that the saturation of the Earth with water caused them; Anaximenes (c. 585–c. 525 BC) believed they were the result of massive pieces of the Earth falling into the cavernous hollows due to drying; and Aristotle (384–322 BC) believed they were caused by instability of vapor (pneuma) caused by the drying of the moist Earth by the Sun's rays.
As nuncio during the 1920s, he had made unsuccessful attempts to obtain German agreement for such a treaty, and between 1930 and 1933 he attempted to initiate negotiations with representatives of successive German governments, but the opposition of Protestant and Socialist parties, the instability of national governments and the care of the individual states to guard their autonomy thwarted this aim.
At very low metallicity, stars of around 140–250 solar masses will reach core collapse by pair instability while they still have a hydrogen atmosphere and an oxygen core and the result will be a supernova with type II characteristics but a very large mass of ejected Ni56 and high luminosity.
Illegal logging has been facilitated by insufficient governance, unclear forest regulation, and undermined judicial control while the exportation of the acquired logs (in 1992, 2006, and 2009–2010) has been permitted by government decrees that either precede elections or are issued during periods of political instability.
In the 1830s, due to the instability of the Regency, European immigration ground to a halt, only recovering after Pedro II took the reins of government and the country entered a period of peace and prosperity.
Khanh said the instability was due to troublemaking by members and supporters of the Catholic-aligned Dai Viet Quoc Dan Dang (Nationalist Party of Greater Vietnam), whom he accused of putting partisan plotting ahead of the national interest.
Luongo's arrival in Vancouver ended a seven-and-a-half-year period of instability for Canucks netminding, with a total of 18 goaltenders having played for the club since Kirk McLean's departure in 1998.
One is that the ice giants were not created by core accretion but from instabilities within the original protoplanetary disc, and later had their atmospheres blasted away by radiation from a nearby massive OB star.
Rocky planets, which have managed to coalesce, settle eventually into more or less stable orbits, explaining why planetary systems are generally packed to the limit; or, in other words, why they always appear to be at the brink of instability.
Taking advantage of instability in the kingdom of Kent to establish himself as overlord, Offa was also in control of Sussex by 771, though his authority did not remain unchallenged in either territory.