Runaway Planets
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Could a Planet Exist Without a Host Star? Astronomers Say Rogue Worlds May Roam Freely
Astronomers have discovered that planets can survive without stars, drifting as rogue or hypervelocity worlds. Some are flung into space by black holes, while others are displaced by gas giants. On some of these rogue worlds, the idea goes, there might be oceans beneath icy crusts, where life, at least life at a microbe level, could exist.
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Earth's Wild Animal Population Plummets 60 Per Cent In 44 Years: WWF
"Runaway consumption" has decimated global wildlife, triggered a mass extinction and exhausted Earth's capacity to accommodate humanity's expanding appetites, the global conservation group WWF warned Tuesday. From 1970 to 2014, 60 percent of all animals with a backbone -- fish, birds, amphibians, reptiles and mammals -- were wiped out by human appe...
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Why No Alien Is Calling US From Space
If the search for an alien life has not yielded any conclusive results in the last 50 years, it is probably because life on other planets was brief and has gone extinct soon after its origin owing to runaway heating or cooling on their planets, say astrobiologists led by an Indian-origin scientist.
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Runaway planets are universe's fastest objects
Runaway planets zipping through space at mind-numbing speeds of 30 million miles per hour are now the fastest objects in the universe, says a study. Seven years ago, the discovery of the first runaway star, shooting out of our Galaxy at a staggering speed of 1.5 million mph, set astronomers on a course of exploration.
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Could a Planet Exist Without a Host Star? Astronomers Say Rogue Worlds May Roam Freely
Astronomers have discovered that planets can survive without stars, drifting as rogue or hypervelocity worlds. Some are flung into space by black holes, while others are displaced by gas giants. On some of these rogue worlds, the idea goes, there might be oceans beneath icy crusts, where life, at least life at a microbe level, could exist.
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Earth's Wild Animal Population Plummets 60 Per Cent In 44 Years: WWF
"Runaway consumption" has decimated global wildlife, triggered a mass extinction and exhausted Earth's capacity to accommodate humanity's expanding appetites, the global conservation group WWF warned Tuesday. From 1970 to 2014, 60 percent of all animals with a backbone -- fish, birds, amphibians, reptiles and mammals -- were wiped out by human appe...
-
Why No Alien Is Calling US From Space
If the search for an alien life has not yielded any conclusive results in the last 50 years, it is probably because life on other planets was brief and has gone extinct soon after its origin owing to runaway heating or cooling on their planets, say astrobiologists led by an Indian-origin scientist.
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Runaway planets are universe's fastest objects
Runaway planets zipping through space at mind-numbing speeds of 30 million miles per hour are now the fastest objects in the universe, says a study. Seven years ago, the discovery of the first runaway star, shooting out of our Galaxy at a staggering speed of 1.5 million mph, set astronomers on a course of exploration.
