Leptastrea (commonly known as the Crust Coral species) is a genus of corals, jellyfish, and sea anemones of concern and found in the following area(s): Africa, American Samoa, Asia, Australia, Central America, Europe, Middle East, North America (United States Territory), Oceanic. « ...
tore through Earth's orbit and collided with the STEREO-A spacecraft. According to Daniel Baker of the University of Colorado, had the superstorm occurred one week earlier, Earth would have received the impact and devastating after-effects. ...
on the slopes of somecratersduring Martian spring and summer suggest that at least small amounts of water may flow seasonally on the planet’s surface. The InSight lander found that the region of Mars’s crust between 11.5 and 20 km (7.1 and 12 miles) under the surface is saturated with...
Earth, third planet from the Sun and the fifth largest planet in the solar system in terms of size and mass. Its single most outstanding feature is that its near-surface environments are the only places in the universe known to harbor life. Learn more ab
the junction of three major sections of the Earth’s crust and involves a complicated series of shelves,volcanic mountainchains, anddeep-sea trenches. The island of Borneo and theisland arcthat includes Sumatra, Java, Bali, and the Lesser Sunda chain sit on theSunda Shelf, a southward ...
the highest in the world. The main political division reflects differing views on the importance of free-market forces; but the socialists long ago stopped insisting on nationalization of the country’s industry, and the nonsocialists have accepted extensive governmental control of the country’s ...
Sunlight, solar radiation that is visible at Earth’s surface. The amount of sunlight is dependent on the extent of the daytime cloud cover. Some places on Earth receive more than 4,000 hours per year of sunlight, as in the Sahara; others receive less th
Plate tectonics—the shifting of large, relatively thin segments of Earth’s crust—and stream erosion have done the most to create Arizona’s spectacular topography. Specifically, the Pacific Plate and the North American Plate came into contact and created the major tectonic forces that uplifted,...
Moon, Earth’s sole natural satellite and nearest celestial body. Known since prehistoric times, it is the brightest object in the sky after the Sun. Its name in English, like that of Earth, is of Germanic and Old English derivation.
(nm, the nanometre, equal to 10−9metre); occurrence of this process in the upper atmosphere removes radiation that would be harmful to life on the surface of the Earth. The pungent odour of ozone is noticeable in confined areas in which there is sparking of electrical equipment, as in ...