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Thursday, 11 July 2013

El Hubble le saca los colores a un planeta extrasolar

Impresión artística de HD 189733b

Impresión artística de HD 189733b


HD 189733b es un planeta extrasolar que está a unos 63 años luz de la Tierra y se ha convertido en el primero del que hemos podido averiguar su color.


Tal y como se puede leer en Hubble spots azure blue planet gracias a mediciones realizadas con el espectrógrafo que lleva a bordo el Hubble Frédéric Pont y su equipo han podido determinar que visto desde el espacio HD 189733b es de un azul muy oscuro, lo que en cierto modo recordaría a la Tierra, aunque en realidad no es que ambos planetas se parezcan mucho.


Se calcula que la atmósfera de HD 189733b alcanza temperaturas de unos 1.000 grados centígrados y que en ella puede haber vientos de unos 7.000 kilómetros por hora cargados de silicatos que podrían caer –de lado, eso sí– en algunas regiones en forma de pequeños granos de cristal. La velocidad de los vientos está causada por los aproximadamente 260 grados de diferencia de temperatura entre el lado día y el lado noche del planeta.


El método utilizado para poder averiguar el color de HD 189733b fue analizar la luz que llega desde su estrella antes, durante, y después de un tránsito del planeta por delante de ella, lo que permitió determinar que cuando HD 189733b pasa por detrás de ella se produce un descenso de aproximadamente una parte en 10.000 de las longitudes de onda correspondientes al azul mientras que las otras no varían.


Pero curiosamente, si pudiéramos ponernos en la superficie de HD 189733b, veríamos una atmósfera rojiza a causa de la presencia de sodio en esta, que absorbe el rojo de la luz que pasa por ella, haciendo que la luz reflejada se vea azul desde fuera.


Atardecer en HD-189733 B



Atardecer en HD 189733 b por Frédéric Pont


La Tierra, por ejemplo, se ve azul desde el espacio –aunque otro tono de azul– porque los océanos absorben con más intensidad las longitudes de onda rojas y verdes que las azules, que además son dispersadas por las moléculas de oxígeno y nitrógeno en la atmósfera, reforzando ese tono azul.





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via Microsiervos http://www.microsiervos.com/archivo/ciencia/hubble-le-saca-los-colores-a-un-planeta-extrasolar.html

Amid In-App Purchases Controversy, SuperAwesome Launches Mobile Ad Network For Kids Content Creators

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SuperAwesome, the UK discovery platform for kids and teens that grew out of the recent acquisition of Swapit by Dylan Collins’ newest venture Box Of Awesome, is launching a mobile ad network aimed at — yes, you’ve guessed it — “premium” kids content creators. Dubbed Kids Mobile Network (KMN), it’s being positioned as a way to help mobile content creators that targets kids, such as mobile free-to-play games, move away from (or at least have an alternative to) funding their wares with controversial in-app purchases.


Claiming that its existing properties — the online ad network, Kids Network, Box Of Awesome, its “free Birchbox for kids“, and Swapit, the site that lets kids and teens trade unwanted items — already means the company has a reach of 8 million UK kids per-month, SuperAwesome seems extremely well-positioned to launch a mobile ad network targeting the same hard-to-reach demographic. It also comes at a time when, says SuperAwesome CEO Dylan Collins, content creators are looking for alternative ways to generate revenue beyond the tried and tested method of in-app purchases, which is seeing a backlash, not least on its home turf.


“There has been a huge amount of criticism and scrutiny about monetizing mobile kids content via IAP,” says Collins. “Everyone has read a story about parents getting £1000+ iTunes bill after their child started playing a free-to-play game. Unfortunately there is little viable alternative in the market. After repeated requests from many of our clients, we have launched a premium mobile network to help approved kids content creators generate revenue as an alternative/complement to IAP.”


To that end, SuperAwesome already works with some of the biggest kids entertainment brands including Hasbro, Warner Bros, Disney, and Topps, though it isn’t able to say which advertisers are already signed up to use KMN. In terms of the types of mobile content or apps that will monetize via KMN, Collins says that the company has “about twenty clients” already live on the ad network ranging across games, education, quizzes and magazine content. “We’re expecting game content to become a leading category for us,” he says.


Meanwhile, citing its own research — the company has a well-regarded research arm called Swapit Research — SuperAwesome says that 55% of UK kids aged 8-16 have smartphones. It therefore seems apt to launch a dedicated niche mobile ad network to serve up that demographic.


Also of note, SuperAwesome hasn’t raised any external financing to date. As it scales up further, I wouldn’t be surprised to see that change.








via TechCrunch » Startups http://feedproxy.google.com/~r/techcrunch/startups/~3/c9hPpJV_2Oo/

With Version 2.0, Social Event Planner UpTo Is On A Mission To Reinvent The Mobile Calendar

Screen shot 2013-07-11 at 5.21.16 AM

Since its launch in early 2012, Detroit-based UpTo has been on a mission to re-invent the mobile calendar by giving it a new type of social context. Through its Android and iPhone app, UpTo attempts to go beyond the all-or-nothing sharing of most calendar apps to let you pick and choose who you share your calendar with, while tapping into streams of events from their favorite venues, teams and activities.


Today, the startup is officially launching version 2.0 of its mobile calendar — its biggest upgrade to date — which sees it re-doubling its efforts to bridge the gap between work and play. Today, most of us tend to have one calendar for work and another for personal use, which rarely interact, but UpTo wants to merge the two in a way that is more reflective of the way people actually live their lives — and use their lives.


While our lives are becoming increasingly social and mobile, calendar apps have yet to truly reflect that change, remaining focused on meetings and appointments and on making lateral updates to the same old work-focused calendar, says UpTo co-founder and CEO Greg Schwartz. Instead, UpTo takes a page from Google+ and Path, allowing users to privately connect with friends, family and co-workers.


Users can sync UpTo with most of the native calendar apps they’re already using, like GCal and Outlook, so they don’t have to rebuild a calendar from scratch. But, more importantly, UpTo allows you to add friends from Facebook or from existing contacts and put them into groups they can then share with, adding, removing or editing those groups as they go.


The app also offers Facebook Event integration so that you can quickly view events you’ve already said “yes” to and share them among your groups.


After creating a new event or finding one already posted, users can tap the “Share” button and select the group they want to share with, whether that’s through UpTo or through email, Facebook or Twitter. Then, like Mailbox (now part of Dropbox), users can swipe to hide events and curate their social calendar feed, leaving only those that are most relevant.


Once you find something relevant you want to share, you can tag event titles to specify which groups you want to share with, using “#fb” to share on Facebook, for example. Or you can start a conversation with friends, commenting on events and “liking” those already made by your friends and co-workers.


But the real key to UpTo’s new social calendar app is its network. The app now offers more than 5,000 public streams of upcoming events, which users can follow based on their preferences. UpTo now has a platform for local businesses, which allows them to add events or import their existing calendars to share with UpTo users, stream it instantly and add that stream to their website.


For users, this means that they now have the ability to peruse mobile calendar streams of their favorite local teams, venues, bars or even their children’s soccer club. Once they find events they want to remember, like an upcoming soccer game, they can add it to their calendar or just follow the teams’ stream on UpTo, sharing it with their “soccer group,” for example.


Schwartz says that the Cleveland Cavaliers, Ticketmaster and the state of Michigan are among the local businesses, teams and organizations already sharing their calendars through UpTo.


To fuel the development of its latest version, and help scale its platform among businesses going forward, the startup has added $500K in new funding from Venture Investors, a local early-stage firm, which joins the startup’s existing investors like Detroit Venture Partners and Ludlow Ventures. The new capital puts the finishing touches on UpTo’s series A round, bringing its total to $2 million.


For hardcore calendar users, UpTo probably isn’t going to replace your go-to work calendar, so don’t expect it to offer the full list of enterprise-y, business-facing features. But, with its newest version, Upto has definitely become a great way to bridge the gap between work and home, manage the overlaps and plan with groups of friends or colleagues and plan activities and events outside of the office.


The more it adds local businesses and integrates TV schedules, local venue schedules and all the critical stuff we want to keep track of, the app could become your go-to meta calendar to manage work, play and everything in between.


Quick intro in the video below:









via TechCrunch » Startups http://feedproxy.google.com/~r/techcrunch/startups/~3/qAA-EK4yvn0/

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Mobilicity confirms talks with potential buyers, doesn't say who



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