Rob Pettengill, Ph.D., is an engineer, astrophotographer, sidewalk astronomer, and volunteer astronomy educator from Austin, Texas. As a NASA JPL Solar System Ambassador, he gives astronomy and astrophotography talks to schools and clubs. His BadAstroPhotos.com website images and how-to content are free for non-commercial reuse to readers in 168 countries. In social media, his outreach is on Flickr, Facebook, Instagram, Cloudy Nights, and Quora, where he’s a “most read” astrophotography and amateur astronomy author. Rob earned his Ph.D. at Stanford for research in medical microelectronics. At Texas Instruments, he designed integrated circuits for speech synthesis and recognition. Rob has won accolades including awards from the Texas Star Party and Astronomical League, as well as many Flickr Explore selections. His images have been featured on the BBC and Time Warner, as well as in EarthSky and Sky & Telescope. He’s a team member of the 2019 Astronomy in Chile Educator Ambas