Last month, Chuck van Zyl celebrated his 100th The Gatherings concert, closing out the space-music series’ 20th season. Over two decades, van Zyl’s brought a tremendous amount of music to Philly that sounds like it was pilfered from a NASA lab — ambient howls, resonating bleeps and bloops, hazy keyboard swells that seem to yank gravity out from under the listener’s feet. It’s an aesthetic he also perpetuates as host of WXPN’s “Star’s End,” which has weirded out many a post-party Saturday-night driver since its inception in 1976. As at that 100th concert, van Zyl will team with Terry Furber and Furber’s array of classic synths to perform at the latest edition of the Event Horizon concert series, the new kid on the space-music block.
Fri., Dec. 7, 8 p.m., with William Fields, free, The Rotunda, 4014 Walnut St., 215-573-3234, therotunda.org, eventhorizonseries.org.