Posted on 05/16/2016 3:15:46 PM PDT by BenLurkin
In a paper published Monday in the Astrophysical Journal, Kaltenegger, who is director of the Carl Sagan Institute at Cornell University, and her colleague Ramses Ramirez modeled the conditions under which life could exist around stars that are close to using up their fuel — ones much older and bigger than our sun.
"We can find all these new places that may become habitable worlds," Kaltenegger said, in the dim, red glow of a slow-burning dwarf star, or on once-frozen planets thawed by a rapidly expanding red giant.
Nearly two dozen such potentially life-sustaining suns exist right in our own galactic back yard, she and Ramirez found. And they want scientists to start taking a closer look at them.
The idea that life can exist around aging stars is not a new one. In 2004, NASA scientist Alan Stern — who led the New Horizons mission to Pluto — authored a paper examining how future conditions in our solar system might change what's known as the habitable zone, where worlds are warm enough to have liquid water on their surface.
For now, of course, Earth inhabits that celestial sweet spot — close enough for life-giving warmth, but not so close that we're burnt to a crisp. But stars get bigger as they age. In 4 billion years, the sun, now a yellow dwarf star, will use up most of the hydrogen fuel at its core and become a geriatric red giant. It will balloon to 200 times its current size, practically touching Earth's orbit and bathing the once-frozen outer edges of the solar system in new levels of warmth. In this very hot, very distant future, Stern suggested, the most habitable worlds will actually be Pluto and its moon Charon, along with Neptune's moon Triton.
(Excerpt) Read more at washingtonpost.com ...
They die in threes so who is next?Hows that for jumping to conclusions?
Who cares?
so if we know their star is dying, they would know that too...and probably be looking for another place to live...i got it! why not tell them that we’re here! that way they’ll know where to go....especially if they’re hungry.
Build a wall around our planet and make them pay for it.
“Who cares?”
Democrats. They’ll need to find a way to tax and regulate it for the children.
I don’t know why they’d think that a star has any impact on a planet’s climate. I thought it was mainly due to CO2, specifically CO2 that has anything to do with humans, and the star isn’t exactly a big player in these affairs.
Time flies. 4,000,000,000 years will pass by before you know it!
Build a globe shape wall around the sun and call it a Dyson sphere....and charge Mexico for it
Build a wall around the Democrat convention, and leave a hose running.
And charge them for it.
Could be true . . . Prince did kind of look like an extra-terrestrial.
One problem, after a few billion years or so any Frozen Earth’s inner core would have cooled by then and there would be little or no magnetic field to protect any life once it unfroze
That describes Hollywood to a T.
Look for starship debris by exploded planets.
http://www.tshirtlaundry.com/assets/images/photos/Playmats/Starfield6_4-22-2014-2.jpg
Thanks BenLurkin.
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