Image credit: © Solarseven

Welcome to the 641st Carnival of Space! The Carnival is a community of space science and astronomy writers and bloggers, who submit their best work each week for your benefit. We have a fantastic roundup today, so now, on to this week’s worth of stories!Universe Today:

• Giant Meteor Impacts Might Have Triggered Early Earth’s Plate Tectonics
• Cancer Seems to Have Trouble Spreading in Microgravity

The Hill:

• Russia’s status as a space power will end with the start of NASA’s commercial crew

Seti@home:

• Is ET in our Solar System?

NextBigFuture:

• Prior 80 years and the Next 80 Years
• A Scattering Shield to Get to Within 10,000 Kilometers of the Surface of the Sun
• Multi-Kilometer Space Telescopes and Megameter Arrays

Thank you for all of your stories – we’ll see you next week!

And if you’re interested in looking back, here’s an archive to all the past Carnivals of Space. If you’ve got a space-related blog, you should really join the carnival. Just email an entry to susie@wshcrew.space, and the next host will link to it. It will help get awareness out there about your writing, help you meet others in the space community – and community is what blogging is all about. And if you really want to help out, sign up to be a host. Send an email to the above address.