Sponsors of IRG for 2020 We thank the generous sponsors, supporters, and friends of the IRG who have gotten us this far with their time and money. We appreciate the 2020 support of: Interstellar Level: Limitless Space Institute Baen Books, Science Fiction PublisherRob & Ruann HampsonJay and Beth Roye Interplanetary Level: Nexolve Lunar Level: Boostphase Synchronous Level: Anonymous