NASA scientists propose to make Pluto a planet again

February 21, 2017 by  
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Alan Stern has never been happy with Pluto’s demotion to dwarf planet. Principal investigator of NASA’s New Horizons mission, he told Gizmodo the International Astronomical Union’s new definition of a planet, which excludes Pluto, is “bullshit.” So he and a team of other NASA scientists have submitted a proposal to the IAU to once again refine the definition of what makes a planet, which would not only include Pluto , but also pretty much any round object in space that is smaller than a star. In the introduction of the new proposal , the scientists express concern that Pluto’s demotion to dwarf planet diminishes its standing in the public perception. Apparently a lot of people want to know why NASA sent New Horizons to Pluto if it’s not a planet anymore. To mitigate the public’s concern, they propose a “geophysically-based definition of “planet” that importantly emphasizes a body’s intrinsic physical properties over its extrinsic orbital properties.” In this case, a planet would be “a sub-stellar mass body that has never undergone nuclear fusion and that has sufficient self-gravitation to assume a spheroidal shape adequately described by a triaxial ellipsoid regardless of its orbital parameters.” Related: New evidence of clouds could make Pluto a planet again https://www.youtube.com/watch?v=xmqDpuDLVYw As Gizmodo points out, such a definition would make a lot more objects in space planets, including Earth’s moon , but the existing definition excludes a lot of space bodies that deserve new consideration. Here are a few of NASA’s concerns with the existing definition of planets, as broken down by Science Alert: “First, it recognises as planets only those objects orbiting our Sun, not those orbiting other stars or orbiting freely in the galaxy as ‘rogue planets’,” they explain. Second, the fact that it requires zone-clearing means “no planet in our Solar System” can satisfy the criteria, since a number of small cosmic bodies are constantly flying through planetary orbits – including Earth’s. Finally, and “most severely”, they say, this zone-clearing stipulation means the mathematics used to confirm if a cosmic body is actually a planet must be distance-dependent, because a “zone” must be clarified. This would require progressively larger objects in each successive zone, and “even an Earth-sized object in the Kuiper Belt would not clear its zone.” While Stern formerly expressed concern that astronomers, not planetary scientists, have control over this definition, the final decision rests with the IAU. Pluto fans stay tuned. Via Gizmodo Images via NASA

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NASA scientists propose to make Pluto a planet again

Inhabitat is giving away an organic Avocado Green Mattress

February 21, 2017 by  
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We spend one third of our lives sleeping, but how many of us have taken the time to learn what’s inside our mattresses? Studies have found that conventional mattresses contain toxic levels of volatile organic compounds that could be the source of many ailments, including chronic allergies, asthma, sleep problems, endocrine problems and even cancer. And once traditional mattresses bite the dust, their synthetic materials resist degradation, resulting in an enduring toxic legacy that would give anyone insomnia. If you’re looking for a new mattress and really want to rest assured, here’s your chance to win the best sleep of your life. We’re giving away your choice of an Avocado Green Mattress made from 100 percent natural latex harvested from tree-­tapped and sustainable sources, 100 percent natural Joma® New Zealand Wool, and certified organic cotton. This completely non­toxic, luxurious mattress, made with chemical-free, biodegradable, and compostable materials, is far better for both you and the planet. ENTER HERE FOR YOUR CHANCE TO WIN! Win your choice of an Avocado Green Mattress , Standard or Pillow-Top, in your preferred size: Twin, Twin XL, Full, Queen, King, or California King. a Rafflecopter giveaway Contest open only to residents of the continental U.S. Handmade in sunny California, the Avocado Green Mattress is all about luxury and transparency. Using 100 percent natural hydrated silica as a fire barrier, the Avocado isn’t filled with the dangerous flame retardants or petroleum­-based foams that traditional mattresses contain. Each mattress is made to order and hand-tufted without chemical adhesives, formaldehyde, heavy metals, or other toxic substances. Made with natural and organic materials, the Avocado’s eco-INSTITUT®-certified, chemical­-free design is surprisingly more durable than synthetic materials, nor does it come with that unpleasant, chemical odor most new mattresses carry. And the natural latex , natural Joma® New Zealand Wool and GOTS-­certified (Global Organic Textile Standard) organic and pesticide-free cotton make this mattress a healthy and sustainable choice. Wool and cotton also naturally regulate temperature and moisture wicking, giving the Avocado mattress superior insulating and cooling properties. Part of Avocado’s hybrid design includes a support layer filled with up to 1,303 ergonomic, individually ­pocketed support coils. This allows for cooler, more durable support than standard foam mattresses. Made from recycled steel, this support system is tuned to three strategically positioned comfort zones that provide incredible support to the hips, back and shoulders. There’s never any need to flip an Avocado mattress – just rotate it. The Standard Avocado Green Mattress is ideal for back and stomach sleepers, characterized by a gentle, yet perfectly firm feel. Its 11-inch-thick base delivers a balanced level of firmness, comfort and support to create a natural sleeping environment. If you want even more luxury, you can instantly upgrade to a plush European-­style feel when the mattress is topped with the optional Pillow­-Top. Its extra 2­-inch layer of 100 percent natural Dunlop latex rubber foam is perfect for side and back sleepers, athletes, and those in need of intense pressure relief. If you aren’t the lucky winner in this giveaway, don’t fret. The Avocado is relatively affordable for a luxury mattress, starting at $959. Each one comes with a risk-free 100-night sleep trial, 10-year warranty, free shipping and returns, and financing with rates as low as 0% APR. For an extra $99, the company will send someone over to set up your new bed for you. Enter above for your chance to win, and dream of sleep in the lap of luxury. + Avocado Green Mattress

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Inhabitat is giving away an organic Avocado Green Mattress

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