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- Asteroid (24334 bytes)
1: ...nd of the asteroid across the gouge on its underside and toward the opposite end. Features as small as...
3: == Definition ==
4: ...p://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1840AN.....17...81E&db_key=AST&high=41e14...
6: The exact definition of an asteroid is unsettled. The term "mi...
8: ...[boulder]]-sized or smaller. The distinction is made because asteroids are large enough to survive pas... - Mercury (planet) (22924 bytes)
1: ...anges from −0.4 to 5.5 in [[apparent magnitude]]; Mercury is sufficiently "close" to the Sun tha...
3: ...not realized it could alternately appear on one side of the Sun and then the other. It was called [[He...
12: ...aded [[Impact crater|crater]]s, where it has been deposited by [[comet]] impacts and/or gases arising ...
16: ...idal bulge]]s, raised by the [[Sun]] (the Sun's tides on Mercury are about 17% stronger than the Moon'...
20: * [[Albedo]] features (areas of markedly different reflectiv... - Cloud (9947 bytes)
3: ...ondensed [[water]] droplets or ice crystals suspended in the [[Earth's atmosphere|atmosphere]] above [...
5: ...appear grey or even black if they are so thick or dense that sunlight cannot pass through.
7: ...anets often consist of material other than water, depending on local atmospheric conditions (what gase...
15: * where air flows up the side of a [[mountain]] and cools as it rises higher in...
16: * when warm air blows over a colder surface such as a cool body of water. - Venus (planet) (31010 bytes)
1: ...]], is named after the [[Roman mythology|Roman goddess]] [[Venus (mythology)|Venus]]. A [[terrestrial...
5: ...r: a circle with a small cross underneath ([[Unicode]]: ♀).
7: ...m [[Cythera]]. Other less common adjectives include ''Venerean'' and ''Veneran''.
14: ...ficantly between the night and day sides of Venus despite its extremely slow rotation (less than one r...
16: ...quite similar to Earth. A common conceptual misunderstanding regarding Venus is the mistaken belief t... - Mars (27704 bytes)
2: [[Image:Mars NPArea-PIA00161 modest.jpg|thumb|right|North Polar region with icecap....
4: ...]]s ([[Phobos (moon)|Phobos]] and [[Deimos (moon)|Deimos]]) which are both small and oddly-shaped, pos...
8: ...e. Its red, fiery appearance is caused by Iron Oxide (rust) on its surface. Mars has only a quarter th...
11: ...he atmosphere on Mars is 95 percent [[carbon dioxide]], 3 percent [[nitrogen]], 1.6 percent [[argon]],...
13: ... volcanic methane is accompanied by [[sulfur dioxide]]. - Jupiter (24639 bytes)
1: ...="margin: 0 0 1em 1em; border: 1px #aaa solid; border-collapse: collapse; font-size: 95%;" align="righ...
4: ...]]<br/><small><font color="white">Click image for description</font></small>
39: | 1.305 30°<br>(6.09? to [[Sun]]'s equator)
41: ...e ascending node|Longitude of the<br> ascending node]]
42: | 100.556 15° - Saturn (planet) (23300 bytes)
1: ...cing=0 align=right style="margin:0 0 .5em 1em; border-collapse:collapse;" width=280px;
4: ...]]<br> <small><font color="white">Click image for description</font></small>
39: | 2.484 46°<br>(5.51? to Sun's equator)
41: ...e ascending node|Longitude of the<br> ascending node]]
42: | 113.715 04° - Uranus (15207 bytes)
1: ...margin: 1em 1em 1em 0; border: 1px #aaa solid; border-collapse: collapse; font-size: 95%;" style="floa...
5: <small><font color="white">Click image for description</font></small>
48: | 0.769 86°<br>(6.48? to Sun's equator)
50: ...e ascending node|Longitude of the<br> ascending node]]
51: | 74.229 88° - Neptune (planet) (18545 bytes)
1: ...margin: 1em 1em 1em 0; border: 1px #aaa solid; border-collapse: collapse; font-size: 95%;" align="righ...
4: ...2]]<br><small><font color="white">Click image for description</font></small>
47: | 1.769 17°<br>(6.43? to Sun's equator)
49: ...e ascending node|Longitude of the<br> ascending node]]
50: | 131.721 69° - Pluto (planet) (26470 bytes)
1: ...margin: 1em 1em 1em 0; border: 1px #aaa solid; border-collapse: collapse; font-size: 95%;" style="floa...
10: | [[Clyde Tombaugh|Clyde W. Tombaugh]]
48: | 17.141 75°<br>(11.88? to Sun's equator)
50: ...e ascending node|Longitude of the<br> ascending node]]
51: | 110.303 47° - Ice age (15810 bytes)
4: ... sense; and use the term 'glacial periods' for colder periods during ice ages and 'interglacial' for t...
10: ...theory, and Agassiz published it in his book ''ɴude sur les glaciers'' of [[1840]].
16: ...[Snowball Earth]] in which permanent sea ice extended to or very near the equator. It has been sugges...
20: ...,000 year time scales. The last glacial period ended about 10,000 years ago. A [http://www.scotese.c...
22: ...America in polar regions, the Earth today is considered to be prone to ice age glaciations. - Climate change (15859 bytes)
5: ... recent climate change]]. For global warming episodes in the geological record, see [[Permian-Triassic...
8: ...led [[climate forcing|climate forcings]], are divided into natural factors, such as variations in [[so...
12: ...nts associated with the [[Canadian Shield|Laurentide]] ice sheet and thus count as "internal variabili...
18: ...te system varies between chaotic and non-chaotic, depending on the state of the external forcing.
23: ...riod"]). See also the discussion at [[carbon dioxide]]. - Moon (37975 bytes)
2: ...ight" style="float:right; margin: 0 0 1em 1em; border-collapse: collapse;"
44: ...ascending node|Longitude of the<br /> ascending node]]
56: | 3,476.2 km [http://www.onasch.de/astro/showobject.php?lang=en&head=f&anim=129&obj=...
73: ! align="left" | Mean [[density]]
94: ! align="left" | [[Declination]] - Ice Age (15809 bytes)
3: ... sense; and use the term 'glacial periods' for colder periods during ice ages and 'interglacial' for t...
9: ...theory, and Agassiz published it in his book ''ɴude sur les glaciers'' of [[1840]].
15: ...[Snowball Earth]] in which permanent sea ice extended to or very near the equator. It has been sugges...
19: ...,000 year time scales. The last glacial period ended about 10,000 years ago. A [http://www.scotese.c...
21: ...America in polar regions, the Earth today is considered to be prone to ice age glaciations. - Wind power (27669 bytes)
1: ... deals mainly with the intricacies of large-scale deployment of wind turbines to generate [[electric p...
3: ...wind power over the United States. This type of undetailed map is most useful for scouting for offshor...
9: ...st of this wind energy can be found at high altitudes where continuous wind speeds of over 160 km/h (1...
11: ...are extremely complicated and relatively little understood, the basics of its origins are relatively s...
13: ...d night, the [[Coriolis effect]], the irregular [[albedo]] (reflectivity) of land and water, humidity, and... - Arctic Ocean (7316 bytes)
7: ... [[Greenland]], and a number of islands. It includes [[Baffin Bay]], [[Barents Sea]], [[Beaufort Sea]...
9: ...of [[continental shelf]] extant on the Eurasian side [http://www.marianatrench.com/mariana_trench-ocea...
12: ...]], meeting with warmer air in the middle [[latitude]]s and causing [[rain]] and [[snow]]. Little mari...
23: There is considerable seasonal variation in how much [[pack ice]] ...
26: ...e highest percentage of any ocean) with the remainder a central basin interrupted by three submarine r... - Water (15217 bytes)
1: ...ies of pure water (H<sub>2</sub>O) (dihydrogen oxide).''
15: ... the first time: [[hail]], [[snow]], [[fog]] or [[dew]] for example. When appropriately lit, water dr...
17: ...iding river [[valley]]s and [[delta]]s which provide rich soil and level ground for the establishment ...
21: ...taste or smell very differently. In fact, we have developed our senses to be able to evaluate the drin...
26: ...density]] at 4°[[Celsius|C]]: it becomes less dense as it [[freezing|freezes]] or [[heat]]s up. As... - Contrail (4281 bytes)
9: ...mes '''vapour trails'''): artificial [[cloud]]s made by the exhaust of [[jet engine|jet]] [[aircraft]]...
15: ... [[saturation]] or [[dew point]]). This causes condensation to occur, and the contrail to form.
17: ...he exhaust into a freezing environment, (as altitude increases, the atmospheric temperature drops) whi...
19: ... drop in temperature, which can cause water to condense out of the air and form a contrail.
26: ...erence of day and night temperatures) was about 1 degree Celsius higher than immediately before. This ...
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