ESA 3D prints extraterrestrial bricks with concentrated sunlight and moondust

May 4, 2017 by  
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The European Space Agency (ESA) is getting in on the 3D-printing fun with extraterrestrial materials. They used simulated lunar material and the sun’s heat to print bricks that are as strong as gypsum . Their project demonstrates how lunar explorers could one day use a similar method to construct Moon colonies. Future travelers to both the Moon and Mars could use locally-sourced materials to build habitats. Recently University of California, San Diego engineers funded by NASA were able to create super-strong bricks with simulated Mars dirt, and now ESA scientists have been able to use dust with similar composition and grain size as the material on the moon to 3D print bricks. Related: Scientists create super-strong bricks from Mars-like soil Materials engineer Advenit Makaya said they cooked successive layers of moondust 0.1 millimeters thick in a solar furnace at temperatures of 1,000 degrees Celsius – or 1,832 degrees Fahrenheit. The team can finish a 7.9 by 3.9 by 1.1 inch brick in about five hours. The solar furnace is located at the DLR German Aerospace Center , a place you may be familiar with because they recently built the world’s largest artificial sun . The bricks will now go through extensive mechanical testing. They’re not perfect yet; for example, some have warped at their edges because the center cools slower than the edges. Advenit said they’re looking into ways to manage the warping, “but for now this project is a proof of concept, showing that such a lunar construction method is indeed feasible.” The European Union’s Horizon 2020 program will back a follow-up project, RegoLight , which aims to develop 3D printing technology to shape lunar regolith, or the “loose layer of dust, soil, and broken rocks on the Moon surface.” Advenit said the recent ESA project occurred in normal atmospheric conditions, but RegoLight will attempt to 3D print with moondust in the high temperature extremes and vacuum conditions you’d find on the Moon. Via the European Space Agency Images via ESA – G. Porter and ESA/Foster + Partners

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ESA 3D prints extraterrestrial bricks with concentrated sunlight and moondust

Indiana governor delivers blow to solar industry

May 4, 2017 by  
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The solar industry provides three times as many jobs in the state of Indiana as natural gas, but governor Eric Holcomb doesn’t seem to care. Despite Department of Energy statistics that show the industry’s potential benefits to his constituents, Holcomb just signed a bill reducing incentives for solar power , impacting both installers and customers. Holcomb signed Senate Bill 309 this week. It’s better than a previous variant, which would have treated homeowners as power plants and consumers simultaneously, requiring them to sell all of the power generated on their own rooftops at the wholesale rate, around four cents per kilowatt-hour (kwh), and then buy it back at the retail rate of about 11 cents per kwh. That version didn’t go through; but the new bill hits net metering , or the opportunity for homeowners to sell excess energy at the retail rate in Indiana. Now they can only sell it at just above the wholesale rate. Related: Solar power now provides twice as many jobs as coal in U.S. That’s not all. Utilities can now charge those homeowners with rooftop solar an extra fee for “energy delivery costs.” Some people think the bill’s ambiguous language also ends net metering entirely for people obtaining power from community solar, or those leasing their panels. People who get rooftop solar installed after 2022 won’t be able to benefit from net metering at all; neither will those people who replace or expand the system they have now after 2017. The public were against the bill, according to Hoosier Environmental Council executive director Jesse Kharbanda who said, “Ask Republicans , ‘What kind of feedback are you getting from your constituents?’ They’ll tell us that they have gotten dozens and dozens of calls opposing the bill, but zero supporting the bill.” Solar installer Paul Steury of Indiana-based Photon Electric said the law could hurt sales since it’s stripped away incentives. He said he knows many representatives who didn’t listen to the people. Indiana rooftop solar owner Lanette Erby told Nexus Media, “We’re currently on an inverter with the electric company, but obviously if the net metering bill were to go through, we’d be purchasing battery backups. That’s where we’re at. The same kind of legislation killed the solar industry in a couple of other states…which is terrible because it’s creating so many jobs.” Via Nexus Media Images via Rectify Solar Facebook

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Indiana governor delivers blow to solar industry

Architects envision a bright new future for Milan’s abandoned railways

May 4, 2017 by  
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Five international studios recently unveiled exciting plans to revitalize seven disused rail yards in Milan, Italy. MAD Architects , EMBT , Stefano Boeri Architects , Cino Zucchi Architetti and Mecanoo reimagined the brownfield sites as beautiful green spaces with social housing and green transportation systems. MAD Architects focused on incorporating sustainable mobility in their design. The team envisioned an entire ecosystem of cycle lanes, footpaths, and pedestrian-friendly spaces that connect different spatial concepts dedicated to different functions. Related: MAD offers up two design proposals for Lucas Museum: one for SF, one for LA Miralles Tagliabue EMBT designed a project named Miracoli a Milano (Miracles in Milan) that includes an area devoted to creativity, one that focuses on education, one dedicated to leisure and entertainment, and a zone for emerging, innovative start-up companies . Stefano Boeri Architects proposed an urban reforestation project for the city. The proposal would transform 90% of the site area into public lawns, woods, green spaces, and orchards interconnected by a sustainable mobility network. Related: UNESCO announces winning design for the Bamiyan Cultural Center in Afghanistan Dutch firm Mecanoo designed seven mobility hubs where trains, subway lines, trams and busses would meet and link to other local and regional hubs. Cino Zucchi Architetti designed a proposal that references the traditional Brolo wooded garden. They replicated the flexibility of this space and envisioned different sites as distinctive environments dominated by greenery. + MAD Architects + Miralles Tagliabue EMBT + Stefano Boeri Architects + Cino Zucchi Architetti + Mecanoo Via Dezeen

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Architects envision a bright new future for Milan’s abandoned railways

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