Nancy Grace Roman Space Telescope
Falcon Heavy. Launch Complex 39A, Kennedy Space Center, FL, USA.
Launch Successful
- Recovery
- B1072: Return to Launch Site, Landing Zone 2, successful
- B1104: Return to Launch Site, Landing Zone 40, successful
- B1105: Expended, not recovered
2 Landed, 1 Expended
- Your Time
- UTC
- At the Pad
Nancy Grace Roman Space Telescope
SpaceX
Mission
Astrophysics, Sun-Earth L2
The Nancy Grace Roman Space Telescope is a NASA infrared space telescope with a 2.4 m (7.9 ft) wide field of view primary mirror and two scientific instruments. The Wide-Field Instrument (WFI) is a 300.8-megapixel multi-band visible and near-infrared camera, providing a sharpness of images comparable to that achieved by the Hubble Space Telescope over a 0.28 square degree field of view, 100 times larger than imaging cameras on the Hubble. The Coronagraphic Instrument (CGI) is a high-contrast, small field of view camera and spectrometer covering visible and near-infrared wavelengths using novel starlight-suppression technology. Roman objectives include a search for extra-solar planets using gravitational microlensing, and probing the expansion history of the Universe and the growth of cosmic structure, with the goal of measuring the effects of dark energy, the consistency of general relativity, and the curvature of spacetime.
Payloads
1 payload
Nancy Grace Roman Space Telescope ↗
Space Telescope · National Aeronautics and Space Administration
4,166 kg
Sun–Earth L2
Countdown Sequence
Planned offsets from T-0; confirmations link to their sources
Sequence Ended · Success
- T−00:53:00
GO for Prop Load
Launch director verifies go for propellant load
Planned Time Elapsed
- T−00:50:00
Stage 1 Propellant Load
Start of propellant loading in the first stage
Planned Time Elapsed
- T−00:45:00
Stage 1 LOX Load
Start of liquid oxygen loading in the first stage
Planned Time Elapsed
- T−00:35:00
Stage 2 Propellant Load
Start of propellant loading in the second stage
Planned Time Elapsed
- T−00:18:30
Stage 2 LOX Load
Start of liquid oxygen loading in the second stage
Planned Time Elapsed
- T−00:07:00
Engine Chill
Start of engine chilling
Planned Time Elapsed
- T−00:00:59
Startup
The onboard computer takes control over the countdown and runs last checks
Planned Time Elapsed
- T−00:00:45
GO for Launch
Launch director verifies go for launch
Planned Time Elapsed
- T−00:00:20
Tank Press
Fuel tanks are pressurized to flight levels
Planned Time Elapsed
- T−00:00:06
Ignition
Start of the engine ignition sequence
Planned Time Elapsed
- T+00:00:00
- T+00:01:08
Max-Q
Maximum dynamic pressure
Planned Time Elapsed
- T+00:02:24
SBECO
Cut-off of the side boosters
Planned Time Elapsed
- T+00:02:27
Boosters Separation
Separation of the side boosters
Planned Time Elapsed
- T+00:02:32
Boosters Flip
Flip maneuver of the side boosters
Planned Time Elapsed
- T+00:02:43
Boosters Boostback Burn Startup
Start of the boosters boostback burn
Planned Time Elapsed
- T+00:03:48
Boosters Boostback Burn Shutdown
End of the boosters boostback burn
Planned Time Elapsed
- T+00:03:51
MECO
Cut-off of the main engine
Planned Time Elapsed
- T+00:03:54
Stage 2 Separation
Separation of the second stage from the first
Planned Time Elapsed
- T+00:04:00
SES-1
First start of the second engine
Planned Time Elapsed
- T+00:04:15
Fairing Separation
Separation of the payload fairing
Planned Time Elapsed
- T+00:06:19
Boosters Entry Burn Startup
Start of the boosters atmospheric entry burn
Planned Time Elapsed
- T+00:06:29
Boosters Entry Burn Shutdown
End of the boosters atmospheric entry burn
Planned Time Elapsed
- T+00:07:23
Boosters Landing Burn
Start of the boosters landing burn
Planned Time Elapsed
- T+00:07:40
Boosters Landing
Landing of the boosters
Planned Time Elapsed
- T+00:08:28
SECO-1
First cut-off of the second engine
Planned Time Elapsed
- T+00:24:33
SES-2
Second start of the second engine
Planned Time Elapsed
- T+00:26:32
SECO-2
Second cut-off of the second engine
Planned Time Elapsed
- T+00:31:31
Payload Separation
Final deployment of the payload from the rocket
Planned Time Elapsed
Change Log
Detected changes and source updates
Launch success with telescope solar panels/sunshade deployed.
Payload deployed.
Liftoff!
Updated launch weather, 70% GO.
Official Webcast by NASA has started
Now targeting Aug 30 at 11:26 UTC
Updated launch weather, 50% GO (launch window per https://x.com/spaceflightnow/status/2093717878302216462).
Now targeting Aug 30 at 11:25 UTC
Updated launch weather, 60% GO.
GO for launch.
Tweaked T-0.
Setting GO.
Added tentative launch time.
NET August 30.
NET late August.
May move up to NET early September.
NET September 28.
NET September.
Adding launch NET October 2026