Visitors from outer space

Visitors from outer space

The most common Visitors from outer space… COMETS!! Near misses by comets and asteroids are rare events, but in 2013, predictions were made that earthlings would experience at least three. A menacing, 1,000-foot-wide asteroid named Apophis which passed within 9 million miles of our planet—close by astronomical standards. Dubbed “the doomsday asteroid,” Apophis has an elliptical orbit around the sun […]

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Mapping the moon

Two NASA probes that spent last year orbiting the moon have returned stunning new geological maps that could help explain how it, Earth, and other planets in our solar system formed. The probes, named Ebb and Flow, flew identical orbits just miles above the moon’s surface to measure its gravity field. Slight disruptions in their paths—caused by the push and […]

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Earth’s magnetic shield getting weaker

Earth’s magnetic field is weakening, and could all but disappear within the next 500 years—exposing our planet to intense solar radiation that would scour its surface of life, Reuters.com reports. Researchers say I the geological record indicates that Earth’s * magnetic field tends to switch polarity f every 250,000 years—and that it’s about 550,000 years overdue for a swap, which […]

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Galactic turmoil ahead

The Milky Way and its closest neighbor, the Andromeda galaxy, are on course for “ a head-on collision,” says astronomer Roeland van der Marel of the Space Telescope Science Institute. But no need for precautions because the crash won’t happen for another 4 billion years. Researchers have long known that Andromeda, currently some 2.5 million light-years away, is moving toward […]

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Life-friendly lake on mars

NASA scientists have discovered evidence that a large freshwater lake existed on Mars billion of years ago, further strengthening the case that Earth’s neighbor once harbored life.The lake was part of a network of waterways that could have lasted thousands or even millions of years—possibly long enough for simple organisms to take hold there.Those conclusions come from an analysis of […]

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