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It also implies that, for example, a star made up of antimatter (an "antistar") will shine just like an ordinary star. [25] This idea was tested experimentally in 2016 by the ALPHA experiment, which measured the transition between the two lowest energy states of antihydrogen. The results, which are identical to that of hydrogen, confirmed the ...
In Worlds of Wonder, Gerrold describes two examples from Ringworld: scrith, strong enough to be used to build a ring 3×10 8 km in diameter; and a character deliberately bred for luck. Gerrold calls bolognium "technobabble", and cautions against overusing it, or using it carelessly; doing so harms the illusion of reality which good sci-fi needs ...
Antimatter – Material composed of antiparticles of the corresponding particles of ordinary matter; Dark energy – Energy driving the accelerated expansion of the universe; Dark matter – Concept in cosmology; Gravitational interaction of antimatter – Theory of gravity on antimatter; Mirror matter – Hypothetical counterpart to ordinary ...
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The CPT theorem implies that the difference between the properties of a matter particle and those of its antimatter counterpart is completely described by C-inversion. Since this C-inversion does not affect gravitational mass, the CPT theorem predicts that the gravitational mass of antimatter is the same as that of ordinary matter. [5]
Antimatter comets and antimatter meteoroids are hypothetical comets and meteoroids composed solely of antimatter instead of ordinary matter.Although never actually observed, and unlikely to exist anywhere within the Milky Way, they have been hypothesized to exist, and their existence, on the presumption that hypothesis is correct, has been put forward as one possible explanation for various ...
An antimatter weapon is a theoretically possible device using antimatter as a power source, a propellant, or an explosive for a weapon.Antimatter weapons are currently too costly and unreliable to be viable in warfare, as producing antimatter is enormously expensive (estimated at US$6 billion for every 100 nanograms), the quantities of antimatter generated are very small, and current ...
An antimatter rocket is a proposed class of rockets that use antimatter as their power source. There are several designs that attempt to accomplish this goal. The advantage to this class of rocket is that a large fraction of the rest mass of a matter/antimatter mixture may be converted to energy, allowing antimatter rockets to have a far higher energy density and specific impulse than any ...