NASA's Roman Space Telescope launched on time this morning at 7:26 a.m. EDT aboard a SpaceX Falcon Heavy from Pad 39A in Florida — with zero launch delays.
Launch and Booster Recovery
- 7:26 a.m. EDT — Liftoff from LC-39A
- 7:27 — Clean Max-Q passage
- 7:31 — Both side boosters separate
- 7:33 — Dual landing success at LZ-2 and LZ-40, about ten seconds apart, with twin sonic booms over the Space Coast
- Shortly after — Spacecraft separation from the upper stage; NASA's blog titled it "Flying on Its Own"
- ~1.4 TB per day of compressed data downlinked
- 17+ TB per day of raw data in time-domain survey mode — over 500 times Hubble's output
- ~20 PB cumulative over the five-year primary mission
- "Launch success" ≠ "mission success": 100 days of cruise plus months of commissioning remain. Webb's same journey took over half a year.
- The $4.3 billion figure is a lifecycle cost, often conflated with development cost in media coverage — unverified against NASA primary documents.
- The LZ-40 footprint detail comes from launch-tracking sites and local government sonic boom notices, not official SpaceX statements.
- NASA Blog: Flying on Its Own
- SpaceX Mission Page
- SpaceNews: ~100 days to L2
- NASA SVS Data Volume Infographic
- STScI Data Rate Press Release
- IPAC Science Support Center
- Open-source romancal pipeline
The rocket story had a milestone of its own: this was SpaceX's first split-zone dual recovery. One booster touched down at LZ-2, the other at LZ-40 — a newly activated landing zone located within the footprint of the retired LZ-1, which completed its final landing in August 2025. The two side boosters had previously flown on GOES-U and Viasat-3 missions. The center core was intentionally expended on this high-energy mission, with its reserved performance given to the telescope. These landings marked the Falcon program's 315th and 316th successful recoveries.
The Road to L2
Roman will cruise roughly 100 days to Sun-Earth Lagrange point 2 (about 1.5 million km from Earth, Webb's neighbor). En route, four of its six sunshield layers deploy in orbit (two are fixed), followed by instrument deployment, calibration, and commissioning before science observations begin. SpaceX noted the mission came in "eight months early and under budget" — per SpaceX's own figures.
The Data Story
The numbers are the real headline:
No human can review this output. Caltech's IPAC Science Support Center built the infrastructure in advance: pipelines run on NASA's cloud using Airflow and Kubernetes, the romancal calibration pipeline (adapted from JWST's) is open source, and the RAPID pipeline uses machine learning on difference imaging to flag transients worth human attention. Where the Rubin Observatory is the wide-field survey data torrent, Roman is the deep-field version — and their alert streams will eventually converge on astronomers' screens.
Caveats
Today's flight added a camera that produces data by the terabyte to the sky, and retired two boosters on the ground. In 100 days, Roman opens its eyes at L2 — and its first data will likely pass through machine eyes before human ones.