deletions | additions       diff --git a/Links.md b/Links.md  index 81a77ee..908bbe8 100644  --- a/Links.md  +++ b/Links.md 
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* **astroML**: [astroML.org](http://www.astroml.org) _Python module for Machine Learning and Data Mining in Astronomy._  * **astropy**: [astropy](http://www.astropy.org) _A community effort to develop a single core package for Astronomy in Python and foster interoperability between Python astronomy packages._ @astropy  * **Authorea**: [authorea.com](http://www.authorea.com) _A collaborative platform for research. Write and manage your technical documents in one place._ #authorea, @authorea  * **Color Brewer**: [colorbrewer2.org] (http://colorbrewer2.org) _Color Advice for Cartography (and quantitative graphics more generally!)_ @ColorBrewer  * **D3**: [d3.js](http://d3js.org) _D3 is a JavaScript library for manipulating documents based on data._  * **d3po**: [d3po.org](http://d3po.org) _Linked views using d3, on the web. Import from Glue, Export to Authorea._ #d3po  * **edX**: [edx.org](http://edx.org) _Great online courses from the world's best universities._ Harvard's courses at [harvardx.harvard.edu](http://harvardx.harvard.edu) #edX #HarvardX 
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* **Virtual Observatory**: [usvao.org](http://usvao.org), [www.ivoa.net](http://www.ivoa.net), [cdsportal.u-strasbg.fr](http://cdsportal.u-strasbg.fr) _Three points of access to official VO tools and infrastructure._ #ivoa  * **WorldWide Telescope**: [worldwidetelescope.org](http://worldwidetelescope.org) _A free Universe Information System from Microsoft Research. Immerse yourself in a seamless beautiful environment._ #worldwidetelescope  * **WorldWide Telescope Ambassadors**: [wwtambassadors.org](http://wwtambassadors.org)  _WorldWide Telescope Ambassadors use the free WorldWide Telescope computer program to educate the public about Astronomy and Science._ #wwtambassadors