equator geophysical observatory
31geomagnetic field — Magnetic field associated with the Earth. It is essentially dipolar (i.e., it has two poles, the northern and southern magnetic poles) on the Earth s surface. Away from the surface, the field becomes distorted. Most geomagnetists explain the… …
32neptune — /nep toohn, tyoohn/, n. any whelk of the genus Neptunea, esp. N. decemcostata, common along the eastern coast of North America and having a shell with seven to ten raised reddish brown spiral ridges on a pale beige or yellow background. [ < NL… …
33Neptune — /nep toohn, tyoohn/, n. 1. the ancient Roman god of the sea, identified with the Greek god Poseidon. 2. the sea or ocean: Neptune s mighty roar. 3. Astron. the planet eighth in order from the sun, having an equatorial diameter of 30,200 mi.… …
34Moons of Saturn — Artist s concepts of the Saturnian ring–moon system Saturn, its rings and major icy moons from Mimas to Rhea …
35Mars — /mahrz/, n. 1. the ancient Roman god of war and agriculture, identified with the Greek god Ares. 2. Astron. the planet fourth in order from the sun, having a diameter of 4222 miles (6794 km), a mean distance from the sun of 141.6 million miles… …
36Greenhouse gas — Simple diagram of greenhouse effect. A greenhouse gas (sometimes abbreviated GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect.[1] …
37X-ray astronomy — X rays start at 0.008 nm and extend across the electromagnetic spectrum to 8 nm, over which the Earth s atmosphere is opaque. X ray astronomy is an observational branch of astronomy which deals with the study of X ray observation and detection… …
38Ionosphere — The ionosphere is a part of the upper atmosphere, comprising portions of the mesosphere, thermosphere and exosphere, distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner …
391994 Pacific typhoon season — Infobox hurricane season Basin=WPac Year=1994 Track=1994 Pacific typhoon season summary.jpg First storm formed=January 2, 1994 Last storm dissipated=December 25, 1994 Strongest storm name=Doug Strongest storm pressure=910 Strongest storm… …
40Phobos (moon) — Phobos Enhanced color view of Phobos obtained by Mars Reconnaissance Orbiter on March 23, 2008. Stickney crater, the largest, is on the right side. Discovery Discovered by …
