People have long wondered about the existence of worlds outside of our solar system. Since 1995, significant progress has been made in the search for extrasolar planets, mostly gas giants the size of Uranus or larger,...
This interactive lesson from NOVA Online provides a detailed look at the inner workings of one of the world's most dangerous volcanoes, Nyiragongo in the Democratic Republic of Congo. Users can click on highlighted...
Most planetary scientists expected that lunar samples brought to back to Earth by the six Apollo missions would confirm one of three leading hypotheses of the Moon's origin. Instead, the samples left all three...
The Moon, Earth's only natural satellite and one of the brightest objects in its sky, appears in the sky in many different shapes. Over the course of a month, the observed shapes result from the interaction of the...
For the past 100 million years, redeposited sediment has gradually increased the size of the Mississippi River Delta. But over the past several decades, the coast of southern Louisiana has been losing rather than...
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