I’m Goldie Blumenstyk, a senior writer at The Chronicle covering innovation in and around academe. Here’s what I’m thinking about this week. The big deal this week in online ed. The announcement on Tuesday that 2U will buy the assets of the nonprofit MOOC company edX for $800 million is shaking up the world of online higher ed. It also means I’ll riff on that news for you this week instead of giving you an annotated reading list, per The Edge’s summer programming (back to that next week). This deal has ramifications in many directions. For starters, it will realign the commercial marketplace for online education, where colleges now pay billions annually to companies known as online-program managers, or OPMs, to help develop, market, and deliver online courses and degrees. The $800 million now headed to a successor nonprofit to edX could also have a huge impact on the future of open-source online options — and maybe breathe new life into the original mission of the nonprofit, which began in 2012 with the goal of democratizing education around the world.