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Two American navy ships were named after the star, both of them World War II vessels, the USS Betelgeuse (AKA-11) launched in 1939 and USS Betelgeuse (AK-260) launched in 1944. In 1979, the French supertanker Betelgeuse was moored off Whiddy Island , discharging oil when it exploded, killing 50 people in one of the worst disasters in Ireland's ...
Arcturus is the brightest star in the northern constellation of Boötes.With an apparent visual magnitude of −0.05, [2] it is the fourth-brightest star in the night sky, and the brightest in the northern celestial hemisphere.
About twelve hours after the explosion, Betelgeuse sank at her moorings in 40 m (130 ft) of water, which largely extinguished the main body of the fire. [9] In spite of this, rescue workers were not able to approach the wreck (the bow of which was still above water) for a fortnight due to clouds of toxic and flammable gas surrounding it. When ...
When pre-red supergiant stars leave the main sequence, oxygen is more abundant than carbon at the surface, and nitrogen is less abundant than either, reflecting abundances from the formation of the star. Carbon and oxygen are quickly depleted and nitrogen enhanced as a result of the dredge-up of CNO-processed material from the fusion layers. [20]
Water vapor, water vapour or aqueous vapor is the gaseous phase of water. It is one state of water within the hydrosphere. Water vapor can be produced from the evaporation or boiling of liquid water or from the sublimation of ice. Water vapor is transparent, like most constituents of the atmosphere. [1]
1784 – The invention of the Lavoisier Meusnier iron-steam process, [1] generating hydrogen by passing water vapor over a bed of red-hot iron at 600 °C. [2] 1785 – Jean-François Pilâtre de Rozier builds the hybrid Rozière balloon. 1787 – Louis-Bernard Guyton de Morveau and others give hydrogen its name (Gk: hydro = water, -genes = born ...
One of the fragments was made of bloomery iron rather than meteoritic iron. [37] [38] The earliest iron artifacts made from bloomeries in China date to end of the 9th century BC. [39] Cast iron was used in ancient China for warfare, agriculture and architecture. [9] Around 500 BC, metalworkers in the southern state of Wu achieved a temperature ...
The Hadean (/ h eɪ ˈ d iː ə n, ˈ h eɪ d i ə n / hay-DEE-ən, HAY-dee-ən) is the first and oldest of the four known geologic eons of Earth's history, starting with the planet's formation about 4.6 billion years ago [4] [5] (estimated 4567.30 ± 0.16 million years ago [2] set by the age of the oldest solid material in the Solar System — protoplanetary disk dust particles — found as ...