S. 1648 would require the Federal Communications Commission (FCC) to issue final rules within 90 days of enactment related to an ongoing rulemaking that would permit businesses to use certain radio frequencies during commercial space launches and reentries. In addition, the act would require the FCC to issue rules to streamline the application process for businesses to use such frequencies. Those rules would modify the process for authorizing commercial space launches from public and private sites, improve coordination between the FCC and the National Telecommunication and Information Administration (NTIA) to increase the speed of the application review process, and automate this process for commercial space launches and reentries.