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- Solar system (21174 bytes)
23: ...rtificial [[satellite]]s orbiting the planets, mainly Earth, as well as probes heading into [[deep spa...
45: ...the only planetary system known, and so theories only had to explain one system to be plausible. The ...
53: ... of life on Earth. The radiation from [[supernova|supernovae]] in spiral arms could theoretically sterilize p...
65: Pluto remains the only planet not having been visited by a man-made spa...
67: ...tmospheres]]. Manned exploration, meanwhile, has only taken human beings as far as the [[Moon]], in th... - Sun (20830 bytes)
135: [[Image:SunLayers.png|thumb|left|220px|Structure of the Sun]]
147: The core is the only part of the Sun where an appreciable amount of h...
162: ...space and its energy escapes the Sun entirely. Sunlight has a [[black-body]] spectrum that is charact...
168: It is about 4,000 [[kelvin]]s. It is the only part of the Sun cool enough to support simple mo...
181: ...produced by the nuclear reactions in the Sun was only one third of the number predicted by theory, a r... - Planetary system (2476 bytes)
7: ...companions were almost entirely evaporated by the supernova blast, leaving behind planet-sized bodies. Alter... - Planet (8450 bytes)
50: ...57 plus 12|PSR B1257+12]] a burned-out star, or [[supernova]] remnant, called a [[pulsar]], comparable in siz... - History of science (41710 bytes)
40: .... Initially these universities were organized to only teach [[theology]], but people like [[Roger Baco...
78: ...sults by introducing discrete energy levels. Not only did [[quantum mechanics]] show that the laws of ...
91: ...ls provided a ready supply of products which not only provided energy, but also synthetic materials fo...
112: Supernova [[SN1987A]] was observed by astronomers on Earth ...
117: ...reciated by his contemporaries and came into use only with discoveries of British surgeon [[Joseph Lis... - Johannes Kepler (17038 bytes)
11: ...ief that he was physically repulsive, thoroughly unlikable and, compared to the other pupils, an outsi...
21: In October [[1604]], Kepler observed the [[supernova]] which was subsequently named [[Kepler's Star]]....
27: ... she refused to confess to the charges. However, only the courageous personal intervention of Kepler (...
40: ...t eliminate the irregular solids, because we are only concerned with orderly creation. There remain si...
46: ...Kepler's Star]] or [[Supernova 1604]]. No further supernovae have since been observed with certainty in the [... - Tycho Brahe (17516 bytes)
16: ... accuracy obtainable. He was able to improve and enlarge the existing instruments, and construct entir...
27: ...a nobleman and a commoner woman lived together openly as husband and wife, and she wore the keys to th...
33: ...new" star. (We now know that Tycho's star was a [[supernova]].) This discovery was decisive for his choice of...
38: ...m]], for the same reasons that he argued that the supernova of 1572 was not near the Earth. He argued that if...
47: ...vents such as the [[comet]] of [[1577]] and the [[supernova]] of [[1572]]. - Hubble Space Telescope (50930 bytes)
54: ...s can be clearly distinguished) would be limited only by [[diffraction]], rather than by the turbulenc...
88: ...quately withstand frequent passages from direct sunlight into the darkness of Earth's [[shadow]] which...
117: ... meant that images from the Space Telescope were only marginally better than the best images obtainabl...
163: ... old, more rigid arrays entered and left direct sunlight.
174: ...ronomers using the telescope to observe distant [[supernova]]e uncovered evidence that far from decelerating ... - Californium (7452 bytes)
59: ...ay have been detected through [[telescope]]s in [[supernova]]e remnants. Californium-249 is formed from the ...
65: ...um (III). Californium has no biological role and only a few californium [[compound (chemistry)|compoun...
78: *[http://periodic.lanl.gov/elements/98.html Los Alamos National Laborato... - Iron (23778 bytes)
139: ...er produce sufficient energy in its core, and a [[supernova]] will ensue.
146: ... [[sulfur]], [[silicon]] and [[phosphorus]]. Its only significance is that of an intermediate step on ...
167: ...tricate shapes, but is too brittle to be worked, unless the product is ''decarburized'' to remove most...
169: ...elopment lagged in Europe, as the smelters could only achieve temperatures of about 1000 K. Through a ...
220: ...target proteins. [http://www.plosbiology.org/plosonline/?request=get-document&doi=10.1371%2Fjournal.pb... - Manganese (14965 bytes)
106: ...asily oxidized. Manganese metal is ferromagnetic only after special treatment.
112: ...s, manganese is a key component of low-cost [[stainless steel]] formulations and certain widely used [...
139: ...te]], also called [[Condy's crystals]], is a commonly used laboratory [[reagent]] because of its oxidi...
148: ...e synthesized in large [[star]]s shortly before [[supernova]] explosion. Manganese-53 decays to <sup>53</sup>...
166: *[http://periodic.lanl.gov/elements/25.html Los Alamos National Laborato... - Nickel (13955 bytes)
178: ...he Western World is used to make austenitic [[stainless steel]]. Another 12 percent goes into superall...
181: *[[Stainless steel]] and other corrosion-resistant [[alloy]...
227: ...]]e and the shape of the [[light curve]] of these supernovae corresponds to the decay of nickel-56 to cobalt-...
231: ...believed to be an important isotope involved in [[supernova nucleosynthesis]] of elements heavier than iron. ...
241: *[http://periodic.lanl.gov/elements/28.html Los Alamos National Laborato... - History of science in early cultures (11033 bytes)
11: ...es]]: sun, moon and stars, but not the planets. Only a few astronomer's names are known: [[Kidinnu]] ...
57: ...ed the [[Crab Nebula]], Messier's [[M1]] (M1 was only the second of seven to be observed in the last 1...
68: ...}}: p.187, [[Paul Hoffman]], ''The man who loved only numbers'': the story of Paul Erd?nd the search f... - Star (12279 bytes)
3: ...h to appear as a disk instead, and to provide [[sunlight|daylight]].
11: ...ive star is long extinct, however, and currently only theoretical.
13: ...], a companion to AB Doradus A, which has a mass only 93 times that of [[Jupiter (planet)|Jupiter]]. S...
25: ...nside those clouds triggered by shockwaves from [[supernova]]e. High mass stars powerfully illuminate the clo...
33: ...ough for further fusion to take place, supported only by [[degeneracy|degeneracy pressure]], called a ... - Taurus (constellation) (2696 bytes)
13: ... the [[Crab Nebula]] ([[Messier object|M1]]), a [[supernova]] remnant northeast of Zeta. The explosion, seen ... - Walter Baade (2275 bytes)
26: Along with [[Fritz Zwicky]], he proposed that [[supernova]]e could create [[neutron star]]s.
30: ...ntified the [[Crab Nebula]] as the remnant of the supernova of the year [[1054]], and identified the optical ...
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