Meteorites, Comets and Asteroids

All about Meteorites Comets Asteroids: Meteorite: Stony, iron, stony-iron metal meteoroid or asteroid metal, Cryovolcanism Shape Dwarf Planet Ceres, Asteroid’s Characteristics, planetary shake-up, asteroid Itokawa, NASA’s OSIRIS-REx, Meteorite bombardment. Asteroid asteroids facts size belt types, answers to questions like: How are asteroids formed? Where are asteroids found? What are asteroids made of? Comets Interesting facts, famous names of comets, halley’s comet, the Kuiper Belt and the Oort Cloud frozen ammonia, methane or water, dirty snowballs and questions like: What are comets made of? Where do comets come from? How big are comets?

  • A new study could explain a 135-year-old mystery concerning how small, glassy spherules become embedded in meteorites called chondrites.
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  • For the first time, astronomers have determined the true color of a planet orbiting another star. Up close, the planet would be a deep cobalt blue reminiscent of Earth. However, instead of oceans, the gas giant's atmosphere is responsible for its striking color.
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  • Pela primeira vez, astrônomos determinaram a cor de um planeta orbitando outra estrela. De perto, o planeta seria de um azul cobalto profundo similar à Terra. No entanto, ao invés de oceanos, a atmosfera do gigante gasoso é responsável por sua cor impactante.
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  • Astronomers have determined the true size and mass of a super-Earth planet orbiting a nearby star.
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  • A new study shows one way in which the rubble and dust covering the surface of asteroids and comets might behave differently than particles on Earth.
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  • Astronomers have discovered two planets orbiting Sun-like stars in crowded cluster of stars. Previously, dense star clusters were thought to be an unlikely place for planets to form and survive.
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  • By combining observations and existing data, astronomers have discovered that the star Gliese 667C is orbited by between five and seven planets. Three of the planets are super-Earths that rest in the star's habitable zone.
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  • NASA has announced a Grand Challenge focused on finding all the asteroids that could threaten the life's future on Earth - and determining what to do about them.
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  • New research shows that a key element for life on Earth was delivered to our planet on meteorites. The heavy bombardment of meteorites during the Hadean and Archean eons provided reactive phosphorus that could have been incorporated into prebiotic molecules.
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  • The red dwarf Proxima Centauri is about to make a rare conjunction with two background stars. Observations of the event could determine if Earth-sized worlds orbit our nearest stellar neighbor.
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