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Hace 3 días · Rhoda Williams, brillante jeune diplômée en astrophysique, rêve d'explorer l'espace. John Burroughs est un compositeur au sommet de sa carrière qui attend un deuxième enfant. Un soir, une planète semblable à la Terre est découverte.
Hace 8 horas · The first space rock, asteroid 2011 UL21, passed by Earth on June 27 at a distance of 4.1 million miles (6.6 million kilometers), or 17 times the distance between Earth and the moon. Researchers ...
Hace 1 día · Earth, third planet from the Sun and the fifth largest planet in the solar system in terms of size and mass. Its single most outstanding feature is that its near-surface environments are the only places in the universe known to harbour life. It is designated by the symbol ♁.
Hace 4 días · The Earth and the Moon form the Earth-Moon satellite system with a shared center of mass, or barycenter. This barycenter is 1,700 km (1,100 mi) (about a quarter of Earth's radius) beneath the Earth's surface. The Moon's orbit is slightly elliptical, with an orbital eccentricity of 0.055. [1]
Hace 1 día · New research confirms the rotation of Earth's inner core has been slowing down as part of a decades-long pattern. How this slowdown might affect our planet remains an open question.
Hace 1 día · The atmosphere of Earth is the planetary atmosphere of Earth, composed of a layer of gas mixture that surrounds the Earth's planetary surface (both lands and oceans), known collectively as air, with variable quantities of suspended aerosols and particulates (which create weather features such as clouds and hazes), all retained by ...
Hace 1 día · At aphelion, Earth’s distance from the sun is about 94.5 million miles. Six months later, at the start of January in the winter, Earth is at its closest point to the sun at 91.5 million miles ...
