Phil Plait
Science evangelist in Colorado
I'm an astronomer, author, scifi dork, TV documentary talking head, and all around science enthusiast. I write the Bad Astronomy Blog for SYFY at https://www.syfy.com/badastronomy. Here's the RSS feed: http://www.syfy.com/tags/bad-astronomy/feed
I have a newsletter, too! https://badastronomy.substack.com
One more thing: I give public talks on science, and IIDSSM, I'm pretty good at it (both my TEDxBoulder talks were picked up for the main TED page!). I have some on astronomy, space, scifi... and I can create new ones to fit your needs: http://www.samaralectures.com/speakers/phil-plait/