Dark-Energy Camera Reveals New Einstein Ring –“Predicted By Relativity Theory”

 

 

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The “Canarias Einstein ring” shown below is one of the most symmetrical discovered until now and is almost circular, showing that the two galaxies are almost perfectly aligned, with a separation on the sky of only 0.2 arcseconds. The source galaxy is 10,000 million light years away from us. Due to the expansion of the Universe, this distance was smaller when its light started on its journey to us, and has taken 8,500 million years to reach us. We observe it as it was then: a blue galaxy which is beginning to evolve, populated by young stars which are forming at a high rate. The lens galaxy is nearer to us, 6,000 million light years away, and is more evolved. Its stars have almost stopped forming, and its population is old.

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The Antarctica Paradox –“One of the Last Places to Experience Human-Driven Climate Change”

 

 

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The waters surrounding Antarctica may be one of the last places to experience human-driven climate change. New research from the University of Washington and the Massachusetts Institute of Technology finds that ocean currents explain why the seawater has stayed at roughly the same temperature while most of the rest of the planet has warmed.

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“Planet 9 Was Stolen By Our Sun” –The Only Exoplanet We Could Reach Via Space Probe

 

 

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"This is the only exoplanet that we, realistically, would be able to reach using a space probe," says Alexander Mustill, astronomer at Lund University. "It is almost ironic that while astronomers often find exoplanets hundreds of light years away in other solar systems, there's probably one hiding in our own backyard."

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New Kepler Planet Discovery Could Sustain Life –“Warm Atmosphere and Surface Liquid Water”

 

 

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“We found there are multiple atmospheric compositions that allow it to be warm enough to have surface liquid water,” said Aomawa Shields, the study’s lead author and a National Science Foundation astronomy and astrophysics postdoctoral fellow in UCLA’s department of physics and astronomy. “This makes it a strong candidate for a habitable planet.” On Earth, carbon dioxide makes up 0.04 percent of the atmosphere. Because Kepler-62f is much farther away from its star than Earth is from the sun, it would need to have dramatically more carbon dioxide to be warm enough to maintain liquid water on its surface, and to keep from freezing.

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Stark Climate Change on Mars –“The Red Planet is Emerging from a 370,000-Year Ice Age”

 

 

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Radar measurements of Mars’ polar ice caps reveal that the mostly dry, dusty planet is emerging from an ice age, following multiple rounds of climate change. Understanding the Martian climate will help determine when the planet was habitable in the past, how that changed, and may inform studies of climate change on Earth. Models have suggested that Mars has undergone ice ages in the past, but empirical data to confirm this has been sparse. While the southern ice cap is relatively small and altered by meteorite impacts, the researchers were able to trace the layers within the northern ice cap. They found layers and migration paths that increase in slope abruptly, reverse direction, or are completely buried. Their analysis suggests that the planet is currently emerging from an ice age, in a retreat that began approximately 370,000 years ago.

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