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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.
Instead, researchers might find indirect evidence, such as climate changes, anomalies in sediment, or traces of nuclear waste. The hypothesis also speculates that artifacts from past civilizations could be found on the Moon and Mars, where erosion and tectonic activity are less likely to erase evidence. The concept of pre-human civilizations ...
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]
One thing is certainly remarkable, that although numbers of field geologists and collectors of specimens of rocks, fossils, and minerals are hammering away all over the world, not one of these investigators has ever come upon a specimen of a live frog or toad imbedded in stone or in coal.
President-elect Donald Trump repeated numerous false claims during an interview that aired Sunday on NBC’s “Meet the Press” – including his old lie that the US is the world’s only ...
In geodesy, the figure of the Earth is the size and shape used to model planet Earth.The kind of figure depends on application, including the precision needed for the model.
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