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Aerogel As Thermal Insulation Material

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The microstructure of silica aerogel is effective in limiting the propagation of local heat excitation, and its solid-state thermal conductivity is 2-3 orders of magnitude lower than that of the corresponding glass state materials. Nano-pores inhibit the contribution of gas molecules to heat conduction. The refractive index of silica aerogel is close to L, and the ratio of annihilation coefficient of IR and visible light is more than 100, which can effectively penetrate sunlight and prevent ambient temperature from infrared thermal radiation, and become an ideal transparent insulating material, which has been applied in solar energy utilization and building energy conservation. By means of doping, the radiant heat conduction of silica aerogel can be reduced, and the thermal conductivity of carbon  aerogel  under normal temperature and pressure can be up to 0. 013w/m K, is the lowest thermal conductivity of solid materials, is expected to replace polyurethane foam as a new typ...
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Feathers from the underground ocean

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The earth is probably the only planet in the solar system that shows moisture. But astronomers believe that quite a lot of planets contain the entire ocean under the surface, which remains liquid due to the heat generated by gravity and radioactive decay. Potential candidates include Jupiter's largest moon Ganymede; Ceres, the largest object in the asteroid belt; and even Pluto, at the far end of the solar system. However, there are only two cases. Astronomers have direct evidence that these hidden oceans exist in the form of water column coming out of the surface, and only one of these cases is conclusive. In 2013, the Harbert Space Telescope discovered the plumes of Jupiter's icy Jupiter, Europa, but never appeared since then. By contrast, Saturn's icy two - guard two appears to have produced more normal plumes, one of which was Cassini's actual flying spacecraft in 2015. Cassini used his airborne mass spectrometer to confirm that plumes are water and contain simp...
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Essex Investment Management Co. LLC Acquires Shares of 189,280 Aspen Aerogels, Inc. (ASPN)

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Essex Investment Management Co. LLC acquired a new position in shares of Aspen Aerogels, Inc. (NYSE:ASPN) in the third quarter, according to its most recent 13F filing with the Securities and Exchange Commission. The firm acquired 189,280 shares of the construction company’s stock, valued at approximately $823,000. Essex Investment Management Co. LLC owned 0.92% of Aspen Aerogels at the end of the most recent quarter. A number of other hedge funds and other institutional investors have also made changes to their positions in ASPN. Renaissance Technologies LLC boosted its position in Aspen Aerogels by 12.5% during the 1st quarter. Renaissance Technologies LLC now owns 262,500 shares of the construction company’s stock worth $1,089,000 after acquiring an additional 29,200 shares during the period. Tocqueville Asset Management L.P. raised its stake in shares of Aspen Aerogels by 1.1% during the 2nd quarter. Tocqueville Asset Management L.P. now owns 856,055 shares of the construction com...
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