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The Portuguese exploration of Africa and Asia, Columbus's voyage to the Americas (1492) provided more direct evidence of the size and shape of the world. The first direct demonstration of Earth's sphericity came in the form of the first circumnavigation in history , an expedition captained by Portuguese explorer Ferdinand Magellan . [ 101 ]
A geode (/ ˈ dʒ iː. oʊ d /; from Ancient Greek γεώδης (geṓdēs) ' earthlike ') is a geological secondary formation within sedimentary and volcanic rocks. Geodes are hollow, vaguely spherical rocks, in which masses of mineral matter (which may include crystals) are secluded.
Coso artifact in 2018. The Coso artifact is an object falsely claimed by its discoverers to be a spark plug encased in a geode.Discovered on February 13, 1961, by Wallace Lane, Virginia Maxey, and Mike Mikesell while they were prospecting for geodes near the town of Olancha, California, it has long been claimed as an example of an out-of-place artifact. [1]
The fascinating results shed light on the origins of life. Other worlds Researchers identified sodium salts, such as the needles of hydrated sodium carbonate highlighted in purple in this false ...
Geodesy or geodetics [1] is the science of measuring and representing the geometry, gravity, and spatial orientation of the Earth in temporally varying 3D.It is called planetary geodesy when studying other astronomical bodies, such as planets or circumplanetary systems. [2]
Image credits: Furious Thoughts You can also use Google Earth to explore the planet and various cities, locations, and landscapes using coordinates.The program covers most of the globe (97% back ...
"In addition, the fact that these chemical building blocks of life can be formed in space and are widespread throughout the solar system increases the chances that life could have started beyond ...
Vugs, cavities and geodes are all examples of open-space filling phenomena in hydrothermal systems. Alternatively, hydraulic fracturing may create a breccia which is filled with vein material. Such breccia vein systems may be quite extensive, and can form the shape of tabular dipping sheets, diatremes or laterally extensive mantos controlled by ...