Falcon 9 Block 5 | TRACERS

NASA's Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) mission, consisting of two identical satellites that will orbit Earth in tandem (one following the other), will help understand magnetic re-connection and its effects in Earth’s atmosphere. Magnetic re-connection occurs when activity from the Sun interacts with Earth’s magnetic field. By understanding this process, scientists will be able to better understand and prepare for impacts of solar activity on Earth. Hitchhiking small satellites: * Athena EPIC (Economical Payload Integration Cost) * Polylingual Experimental Terminal (PExT) * Relativistic Electron Atmospheric Loss (REAL)

Heliophysics · Sun-Synchronous Orbit (SSO)

• B1081 · flight 16 · Return to Launch Site @ Landing Zone 4 · landed ✓ · last flew Falcon 9 Block 5 | Starlink Group 15-6 · zone record 35/35

• SpaceX - Falcon 9 - TRACERS & Others - SLC-4E - Vandenberg SFB - July 23, 2025 — SPACE AFFAIRS
• Watch live: SpaceX Falcon 9 rocket launches NASA's TRACERS mission from Vandenberg, California — Spaceflight Now
• TRACERS Mission — SpaceX

1. T−38MGO for Prop Load
2. T−35MStage 1 LOX Load
3. T−35MProp Load
4. T−16MStage 2 LOX Load
5. T−7MEngine Chill
6. T−1MTank Press
7. T−1MStartup
8. T−45SGO for Launch
9. T−3SIgnition
10. P0DLiftoff
11. T+1M12SMax-Q
12. T+2M13SMECO
13. T+2M17SStage 2 Separation
14. T+2M21SStage 1 Flip
15. T+2M24SSES-1
16. T+2M30SBooster Boostback Burn Startup
17. T+2M56SFairing Separation
18. T+3M26SBooster Boostback Burn Shutdown
19. T+6M4SEntry Burn Startup
20. T+6M21SEntry Burn Shutdown
21. T+7M12SStage 1 Landing Burn
22. T+7M46SStage 1 Landing
23. T+8M2SSECO-1
24. T+50M44SSES-2
25. T+50M47SSECO-2
26. T+54M30SPayload Separation
27. T+54M50SPayload Separation
28. T+1H5M40SSES-3
29. T+1H5M41SSECO-3
30. T+1H30M7SSES-4
31. T+1H30M8SSECO-4
32. T+1H34M26SPayload Separation
33. T+1H40M41SPayload Separation
34. T+1H44M46SPayload Separation
35. T+1H45M6SPayload Separation
36. T+1H45M26SPayload Separation

• Launch success

  SwGustav · 7/23/2025 · source

• All payloads deployed

  SwGustav · 7/23/2025 · source

• Unofficial Re-stream by SPACE AFFAIRS has started

  LL2 · 7/23/2025 · source

• Liftoff.

  Cosmic_Penguin · 7/23/2025 · source

• Official Webcast by SpaceX has started

  LL2 · 7/23/2025 · source

• Go for launch.

  juststephen · 7/22/2025 · source

• Scrubbed, next attempt TBC.

  juststephen · 7/22/2025 · source

• Unofficial Re-stream by SPACE AFFAIRS has started

  LL2 · 7/22/2025 · source

• Updated launch window.

  Cosmic_Penguin · 7/22/2025 · source

• GO for launch.

  Cosmic_Penguin · 7/19/2025 · source