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3 天前 · A supernova ( pl.: supernovae or supernovas) is a powerful and luminous explosion of a star. A supernova occurs during the last evolutionary stages of a massive star, or when a white dwarf is triggered into runaway nuclear fusion. The original object, called the progenitor, either collapses to a neutron star or black hole, or is completely ...
2024年5月23日 · Lightning is a natural phenomenon formed by electrostatic discharges through the atmosphere between two electrically charged regions, either both in the atmosphere or one in the atmosphere and one on the ground, temporarily neutralizing these in a near-instantaneous release of an average of between 200 megajoules and 7 gigajoules of energy, depending on the type.
3 天前 · Mercury is the first planet from the Sun and the smallest in the Solar System. In English, it is named after the ancient Roman god Mercurius (Mercury), god of commerce and communication, and the messenger of the gods. Mercury is classified as a terrestrial planet, with roughly the same surface gravity as Mars. The surface of Mercury is heavily ...
1 天前 · The Bay of Pigs Invasion (Spanish: Invasión de Bahía de Cochinos, sometimes called Invasión de Playa Girón or Batalla de Playa Girón after the Playa Girón) was a failed military landing operation on the southwestern coast of Cuba in 1961 by Cuban Democratic Revolutionary Front (DRF), consisting of Cuban exiles who opposed Fidel Castro's Cuban Revolution, clandestinely financed and ...
3 天前 · Montenegro (/ ˌ m ɒ n t ɪ ˈ n iː ɡ r oʊ,-ˈ n eɪ ɡ r oʊ,-ˈ n ɛ ɡ r oʊ / MON-tin-E(E)G-roh, - AY-groh; Montenegrin: Crna Gora / Црна Гора; Albanian: Mali i Zi; lit. ' Black Mountain ') is a country in Southeast Europe, located in the Balkans. It is bordered by Bosnia and Herzegovina to the north, Serbia to the northeast, Kosovo to the east, Albania to the southeast, and ...
3 天前 · Signature. Oscar-Claude Monet ( UK: / ˈmɒneɪ /, US: / moʊˈneɪ, məˈ -/, French: [klod mɔnɛ]; 14 November 1840 – 5 December 1926) was a French painter and founder of impressionism painting who is seen as a key precursor to modernism, especially in his attempts to paint nature as he perceived it. [1] During his long career, he was the ...
3 天前 · The word psychopathy is a joining of the Greek words psyche ( ψυχή) "soul" and pathos ( πάθος) "suffering, feeling". [17] The first documented use is from 1847 in Germany as psychopatisch, [18] and the noun psychopath has been traced to 1885. [19] In medicine, patho- has a more specific meaning of disease (Thus pathology has meant the ...
