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Helium balloons are pulled by gravity the same as everything else. But because it is pulled less (lighter) than the surrounding air, the air moves downward and the helium takes its place higher up. In a vacuum, helium would fall same as anything else. Once a balloon reaches an altitude where it is the same density as the surrounding air, it will quit rising. Density of gases -> http://chemistry.elmhurst.edu/vchembook/123Adensitygas.html

Helium balloons are pulled by gravity the same as everything else. But because it is pulled less (lighter) than the surrounding air, the air moves downward and the helium takes its place higher up. In a vacuum, helium would fall same as anything else. Once a balloon reaches an altitude where it is the same density as the surrounding air, it will quit rising. Density of gases -> http://chemistry.elmhurst.edu/vchembook/123Adensitygas.html

In 2004, astronomers discovered a star composed entirely of diamond, measuring 4,000 km across and 10 billion trillion trillion carats. 50 light years from Earth, the diamond star is classified as a crystallized white dwarf, the hot core that remains after a star burns out. Only recently have scientists been able to study the contents of the white dwarf, and they’ve confirmed that the crystallized carbon interior of the star is, in fact, the galaxy’s largest diamond.

En la Constelación Centauro hay una estrella de puro diamante, equivalente a 10 billones de trillones de trillones de quilates. Tiene un diámetro de kilómetros Su nombre oficial es BPM pero el informal "Lucy", por "Lucy in the sky with diamonds"

Se celebra el 45 aniversario de la llegada del Apolo 11 a nuestro satélite

EU conmemora la llegada del hombre a la Luna

La misión espacial china reveló que EEUU nunca pisó la Luna - Pulso Ciudadano Tres Punto Cero

luna-tierra-2

Una vez más, la Luna ha sido captada pasando frente a la Tierra. Esta imagen, nada habitual, ha sido posible gracias a una sonda de observación terrestre, ...

Desde hace unos sesenta años para acá, los médicos y científicos han detectado una nueva y terrible enfermedad causada por agentes que no son ni virus, ni microbios ni ningún agente o microorganismo sino que son causadas por Priones, que son una proteínas dañadas o alteradas genéticamente. ... http://www.taotv.org/2013/12/14/nuevas-enfermedades-mortales-que-son-propagadas-y-mantenidas-en-secreto-por-las-grandes-trasnacionales-judias/

Nuevas Enfermedades Mortales que son Propagadas y Mantenidas en Secreto por las Grandes Trasnacionales Judías

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