The habitable zone, redefined
openminds.tv
Astronomers at Penn State have redefined the habitable zone–the range around a star that is not too cold or too hot for liquid water to exist on a planet, making it potentially capable of sustaining life as we know it.
habitable zone distances around various types of stars based on the updated habitable zone definition. (Credit: Chester Herman)
Building on the previous definition established by Penn State’s Dr. James Kasting, the Penn State Department of Geosciences team developed an updated model for determining whether planets fall within a star’s habitable zone. And in comparing the new model with the previous model, astronomers found that habitable zones are farther away from the stars than previously thought. Space.com explains:
The new definition of the habitable zone is based on updated atmospheric databases called HITRAN (high-resolution transmission molecular absorption) and HITEMP (high-temperature spectroscopic absorption parameters), which give the absorption parameters of water and carbon dioxide — two properties that strongly influence the atmospheres of exoplanets, determining whether those planets could host liquid water.
The new definition isn’t drastically different from the previous definition. But as astronomer Abel Méndez of the University of Puerto Rico at Arecibo explains to Space.com, “Many of those planets that we believe were inside are now outside. But on the other side, it extends the habitable zone’s outer edge, so a few planets that are farther away might fall inside the habitable zone now.” Méndez was not part of the team that redefined the habitable zone. But he does manage a list, called the Habitable Exoplanet Catalog, which contains all known potentially habitable exoplanets.
Adjustments will be made to the catalog based on the redefined habitable zone
2013-01-29 15:33:44
Source: http://www.openminds.tv/the-habitable-zone-redefined-905/
Source:
Anyone can join.
Anyone can contribute.
Anyone can become informed about their world.
"United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.
Before It’s News® is a community of individuals who report on what’s going on around them, from all around the world. Anyone can join. Anyone can contribute. Anyone can become informed about their world. "United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.
LION'S MANE PRODUCT
Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules
Mushrooms are having a moment. One fabulous fungus in particular, lion’s mane, may help improve memory, depression and anxiety symptoms. They are also an excellent source of nutrients that show promise as a therapy for dementia, and other neurodegenerative diseases. If you’re living with anxiety or depression, you may be curious about all the therapy options out there — including the natural ones.Our Lion’s Mane WHOLE MIND Nootropic Blend has been formulated to utilize the potency of Lion’s mane but also include the benefits of four other Highly Beneficial Mushrooms. Synergistically, they work together to Build your health through improving cognitive function and immunity regardless of your age. Our Nootropic not only improves your Cognitive Function and Activates your Immune System, but it benefits growth of Essential Gut Flora, further enhancing your Vitality.
Our Formula includes: Lion’s Mane Mushrooms which Increase Brain Power through nerve growth, lessen anxiety, reduce depression, and improve concentration. Its an excellent adaptogen, promotes sleep and improves immunity. Shiitake Mushrooms which Fight cancer cells and infectious disease, boost the immune system, promotes brain function, and serves as a source of B vitamins. Maitake Mushrooms which regulate blood sugar levels of diabetics, reduce hypertension and boosts the immune system. Reishi Mushrooms which Fight inflammation, liver disease, fatigue, tumor growth and cancer. They Improve skin disorders and soothes digestive problems, stomach ulcers and leaky gut syndrome. Chaga Mushrooms which have anti-aging effects, boost immune function, improve stamina and athletic performance, even act as a natural aphrodisiac, fighting diabetes and improving liver function. Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules Today. Be 100% Satisfied or Receive a Full Money Back Guarantee. Order Yours Today by Following This Link.
| Visits: | 1,708,746,406 |
| Stories: | 8,451,208 |
Whistler Blowers, Insiders
