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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Ancient Boiling Oceans

In its early days, Earth became hell. About 3.3 billion years ago, new research indicates, at least two massive asteroids 30 to 60 miles in diameter smashed into this planet, boiling the oceans and sending atmospheric temperatures soaring to an unimaginable 932 degrees Fahrenheit. Stanford University scientists have found evidence of this extreme era in a geological formation in South […]

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Relics of the big bang

Astronomers have discovered two clouds of gas some 12 billion light-years away that appear to preserve the primordial conditions of the universe in the minutes after the big bang. The clouds contain just hydrogen and its isotope deuterium, making them “the first examples to fit precisely” into what scientists think the early universe was like, University of California astronomer Jason […]

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The secrets of supermassive black holes

Astronomers have spotted the most enormous black holes ever detected, inspiring new theories about how such pockets of extreme gravity form. Together, the two objects, which are roughly 300 million light-years away, have more mass than 30 billion suns, University of California at Berkeley astrophysicist Chung-Pei Ma tells the Associated Press. “They are monstrous,” she says. The smaller of the […]

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Jupiter’s Destructive Path

Earth may owe its existence to the planet Jupiter. New research shows that the giant planet played a key role in the formation of the solar system by barreling through it like a cosmic wrecking ball, destroying existing planets and creating debris that coalesced into new ones, including ours. Astronomers began examining this theory after finding that virtually all of […]

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Our Galaxy’s Explosive Past

Our Galaxy's Explosive Past

A huge energy flare ripped through the heart of our galaxy about 3.5 million years ago. A blast so extremely powerful, it could be felt 200k light-years away and lasted more than 300k years. A study concluded by researchers in Australia and the U.S. found that the former belief that “our galaxy was an inactive galaxy” may in fact not […]

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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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Earth’s bigger, older cousins

Astronomers have discovered the larg­est rocky planet yet, and its existence has profound implications for our understanding of the early universe and the potential for extraterrestrial life. Kepler-10c, which was spotted by NASA’s Kepler space telescope, has a diameter of roughly 18,000 miles—more than twice that of Earth —prompting scientists to create a new class of planets, dubbed “mega-Earths.”The body’s […]

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