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Astronomy page 4

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Toba caldera volcano
Large calderas of the world are formed after cataclysmic explosions of volcanoes
calculating the distance of the horizonIn search of black holes
How to calculate the distance to the horizon?In search of black holes
the threat of supervolcanoesthe return of sunspots in 2010
The threat of supervolcanoesFinally the return of sunspots in 2010
detailed image of Betelgeusematière manquante, énergie noire
The most detailed optical image of BetelgeuseNon-baryonic dark matter
 
polar bears endangeredice cores tell us about the past...
Man will he the largest animal on Earth?Ice cores tell us about the past
Earth's atmosphere from spacearche anticrepuscular
Earth's atmosphere from spaceShadow of the Earth or arch anticrepuscular
Nuclear fission solar flare of February 15, 2011
Nuclear fusion, natural energy sourceThe most violent solar eruptions
fusion of galaxiesNuclear Power
Fusion galaxies and black holesNuclear energy or the particularity of uranium
vernal equinox and autumnalasteroid or comet (Itokawa and hartley 2)
The days and nights equinoxAsteroid or comet?
 
oil refinery
Global energy demand. At the dawn of a revolution, many people will be sacrificed
neutron Starsthe supervolcanoes that changed life on Earth
Neutron star, billions of tons cm3Supervolcanoes that changed life on Earth
DNA carrier of genetic informationeccentricity, obliquity and precession of the Earth
Story of the evolution towards the livingVariation of the eccentricity of the Earth
the global ecological footprintSpace debris
Global ecological footprintExponential increase in space debris
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