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Space-based solar power (SBSP) has been in the news recently‚ with the successful test of a solar power demonstrator in space taking place last summer. While the concept is fundamentally sound‚ there are plenty of hurdles to overcome if the technology is to be widely adopted – not the least of which is cost. NASA is no stranger to costly projects‚ though‚ and they recently commissioned a study from their internal Office of Technology‚ Policy‚ and Strategy that suggests how NASA could continue to support this budding idea. Most interestingly‚ if the technological cards are played right‚ SBSP could be the most carbon-efficient‚ lowest-cost power source for humanity by 2050. To be clear‚ there are a lot of hurdles to overcome to get to that point‚ but first‚ let’s start with what the report looked at. Its primary concern was two-fold – how expensive the electricity from a power satellite is and how high its lifecycle carbon emissions are‚ including those introduced to the atmosphere to get it into space in the first place. Those two data points were analyzed for two different systems‚ one modular one called the SPS-Alpha Mark-III suggested by prolific inventor John Mankins‚ which is a little more theoretical‚ and another by a group of Japanese researchers called the Tethered-SPS that uses a more traditional design. In most of the calculations the report provides‚ the SPS-Alpha Mark-III outperforms the more conventional system. Still‚ there are some technical hurdles to its implementation – though nothing so complicated as some of the others discussed therein. Fraser interviews an expert on space power – Prof Stephen Sweeney The results report presents are not pretty for SBSP. Given their current levels of technical maturity‚ both solutions produce electricity that is more expensive than any existing technology. Not only that‚ even the more climate-friendly SPS-Alpha Mark-III is still comparable only to solar power in terms of climate impact and is beaten out by things like hydropower or even nuclear fission. So‚ some work needs to happen before there is any commercial incentive to adopt this technology. Let’s tackle cost first – two big sources are the cost of getting the satellite into orbit and maintaining it when it’s up there‚ known as in-space assembly and maintenance (ISAM). The report even provides some allowances for the launch cost to be lower than it currently is (without fully functional Starships). But even with that lower cost‚ 863 launches to geosynchronous orbit for the smaller of the two systems will likely not allow any system to be cost-competitive with terrestrial alternatives. Also‚ as of right now‚ no ISAM infrastructure could support such a massive satellite. So if any part of the system fails while in space‚ which‚ given the nature of the environment‚ is inevitable‚ there wouldn’t be any feasible way to fix it. Like lowering launch costs‚ this‚ too‚ is being worked on by several commercial entities. However‚ the inability to maintain infrastructure in orbit inexpensively will plague cost assessments of any large project in the near future. Isaac Arthur describes how useful beaming power in space can be.Credit – SFIA YouTube Channel As for greenhouse emissions – most of those are caused by the launches required to get into space. There haven’t been a lot of studies done on the effects of emitting combustion products into the high atmosphere‚ especially in terms of their impact on the environment. But it wouldn’t be surprising if that wasn’t good. But even without that‚ just the sheer amount of greenhouse gases that must be emitted to lift all of the weight of these systems into space would make it hard to compete with low-carbon alternatives.  These difficulties might sound like a death knell for building a SBSP system in the near future. But there is a silver lining. Using a statistical methodology sensitivity analysis‚ the report’s writers created a scenario where SBSP is the most cost-effective with the least greenhouse gas emissions of any energy source available in 2050. To do so requires some great leaps in technology; in particular‚ using other technologies‚ like increased ISAM and ion drives to move the parts from low Earth orbit (where Starships can be reusable) to geostationary orbit‚ can dramatically limit the number of launches needed. Other improvements include optimistic standards for cost analysis‚ such as lower launch costs (though the $500/kg the study uses is far lower than even more optimistic estimates of what Starship can do) and increasing the lifetime of the equipment itself.  Even the Financial Times is interested enough to take a look at the underlying SBSP idea.Credit – Financial Times YouTube Channel Ultimately‚ this analysis goes to show that‚ with a little bit more development‚ SBSP could be not only cost-competitive in 25 years but also the best option for low-cost‚ environmentally friendly power. However‚ the report’s purpose was to suggest potential action items to NASA’s leadership‚ and its outcome was an underwhelming “keep an eye on it.” It rightfully points out that plenty of the activities that would go into making SBSP as potentially fantastic as it can be‚ such as lower launch costs‚ ion drives‚ and improved ISAM systems‚ are already on NASA’s radar and are actively under development‚ with varying levels of support. The authors suggest looking into the technology every few years‚ as NASA has been for decades at this point‚ to see if any specific technical hurdles aren’t being addressed as part of other projects. For now‚ they didn’t find any. But plenty of technologies that weren’t even mentioned in the report‚ such as asteroid mining or deployable lightweight structures‚ could also fundamentally change the economic calculations. One thing is for sure – whatever future reports on the viability of SBSP will have plenty of new advances to consider. Learn More:NASA OTPS – New Study Updates NASA on Space-Based Solar PowerNASA OTPS – Space-Based Solar PowerUT – New Satellite Successfully Beams Power From SpaceUT – Could Space-based Satellites Power Remote Mines? Lead Image:DALL-E’s interpretation of a SBSP system. The post New NASA Report Suggests We Could See Space-Based Power After 2050 appeared first on Universe Today.

In the age of television‚ radio‚ and the internet‚ we hear voices all the time‚ pretty much everywhere we go. From advertisements to customer service prompts to video narrations‚ voiceovers have become so commonplace that we don't give them much thought.That is‚ until we see someone actually doing those voices we're so accustomed to hearing.Professional voice actor Tawny Platis shared a video to her Tiktok demonstrating 10 voices most of us will instantly recognize‚ and it's as uncanny as it is impressive. She seamlessly transitions from a text-to-speech voice to a "detached casual conversation" voice to a bright "We've got denim for the whole family!" department store voice and more. As she shares these voices‚ you'll swear you've heard her doing them before‚ either on a call with your bank‚ in your workplace's onboard training‚ or while reaching for a tissue during a holiday commercial. It's downright freaky. Watch: @tawnyplatis 10 common reads you’ll hear in voiceover! #voiceactor #funny People in the comments had the most relatable responses to Platis' voiceover demonstration."This is incredible. I’m ready to buy something. I’m not sure what." "I feel like you’ve been there for all the important moments of my life. Thank you.""Bright was so triggering as a retail worker.""Can’t tell if i’ve heard your voice before or if you’re just that good."Being in the virtual presence of such greatness made some folks rethink their own voice acting ambitions. "Me at the beginning of the video: I could be a professional voice actor!…… me at the end of the video:… there’s a reason SHE is a professional voice actor. Well done. 👏""Me sometimes 'I bet I could voice act' me after this video 'nope. I can't do that.'""Welp I can cross this off my list of potential professions. That was amazing."Mostly‚ people were rightfully impressed with her range and talent. To have that much control over how your voice sounds with such consistency is remarkable. But this video also offers interesting insights into the psychology of how this kind of acting impacts modern-day life. Each of these voices evokes a specific response in us‚ from comfort to excitement to trust to awe. It's a bit unsettling to clearly see how easily we can be influenced by someone's voice and how well-honed those cues and responses have become. Voiceover professional Simon Lewington explained this phenomenon in an article on LinkedIn: "Just as colors evoke emotions in visual art‚ the tone of voice creates an emotional palette in auditory storytelling. The psychological impact of tone is profound. A warm and inviting tone can make viewers feel welcome‚ while a serious tone lends an air of authority. Choosing the right tone consciously allows voice-over artists to evoke intended emotions in the audience."Lewington writes that voiceover artists are "emotional architects" who "use the psychology of voice to subtly shape how viewers perceive and engage with content." It's an art that can be used to enhance our enjoyment of an experience‚ but also one that can be used to convince us to buy or believe something. Voiceover work is powerful‚ and when it's done well‚ it's almost spooky how much it can affect us.If you want to see more from Tawny Platis‚ you can follow her on TikTok or find her courses and tutorials for voice acting here.

Longing to visit one of America’s many national parks‚ and not sure where to start? One traveling couple just made deciding a whole heck of a lot easier. Matt and Karen Smith have been to all of them. That’s right. All 63 of them. They even survived a plane crash to hit the milestone (more on that later). In a short and sweet 30-second video posted to their Instagram account‚ Matt and Karen place certain parks into special categories‚ like “best wildlife sightings‚” “most underrated‚” and “most awe inspiring‚” all before revealing which park‚ in their opinion‚ is “the best of everything.” Of course‚ it might be hard to really take in the information the duo give during the first watch‚ because they captured some truly breathtaking views—from lush forest to galloping buffalo to backdrops that look like they belong to an alien planet.So here’s the breakdown‚ for easy reading:Washington’s Olympic National Park was named “most diverse” as Karen walked through what looked like a mix between rainforest and something out of Dr. Suess.Death Valley in California won “most otherworldly” for its “Mad Max”-esque terrainBoth Montana’s Glacier and Mount Rainier in Washington tied for “most epic hiking trails‚” while Utah’s Zion National park got “most unique hiking trails.” Utah’s Bryce Canyon was dubbed “most enchanting” as the camera panned under a picturesque stone arch to reveal colorful stone cliffs. Rounding out the list‚ South Dakota’s Badlands got “most underrated‚” Yellowstone got the accolade of “best wildlife sightings” and “most awe-inspiring” went to the Grand canyon. Lastly‚ “best of everything” went to…drumroll please… …Grand Teton in Wyoming. See on Instagram While this list is based off of Karen and Matt’s experience‚ they wrote in the caption‚ “the great thing about our parks is that you get to experience them for yourself and make your own best of’ memories‚ which will of course be different from ours.”The couple have a wanderlust so strong that not even a plane crash couldn’t thwart their plans. According to the Seattle Times‚ they were flying back from a visit to Lake Clark National Park in Alaska in 2011 when their plane flew into a float plane mid air. Luckily‚ both aircrafts were able to land safely and no injuries were had.Next time you’re longing for the exotic sights of faraway places‚ remember that sometimes your own backyard has so much natural splendor to offer.

from Revolver News: Where’s the binder? That’s the burning question echoing through the swampy marshes of DC‚ and it’s been hanging in the air for some time. Rumor has it‚ this binder is packed with the real story behind the Russia Hoax—a narrative that deviates sharply from the widely reported “tip” originating from our Australian […]

NOW – Trump says Biden is doing "a witchhunt against his political opponent" like in "third-world countries‚ banana republics." pic.twitter.com/F1kCuS7Otm — Disclose.tv (@disclosetv) February 16‚ 2024