Falcon 9 Block 5 | Starlink Group 15-3 launch

SpaceXLaunch SuccessfulCommunications

Starlink Group 15‑3

Name: Falcon 9 Block 5 | Starlink Group 15-3
Start: 2025-05-10T00:19:50Z
Location: Space Launch Complex 4E, Vandenberg SFB, CA, USA

Falcon 9 Block 5

Launched Sat, May 10 · 12:19:50 AM UTC2025-05-10 00:19:50 UTCSpace Launch Complex 4E, Vandenberg SFB, CA, USA

Reached orbit
Booster landed on Of Course I Still Love You

Follow SpaceX in the app Watch the replay

Success

Reached Low Earth Orbit

The second stage shut down at T+8:40.

Landed

B1081 Landed

The first stage landed on Of Course I Still Love You, on its 14th flight.

Worldwide

97th

orbital launch attempt in 2025

SpaceX

56th

launch this year

Space Launch Complex 4E

17th

launch from this pad this year

Pad turnaround

11 d 3 h

since the pad's previous launch

Replay

Replay: SpaceX Starlink Group 15-3

The Flight Plan

Planned times, from liftoff at 12:19 AM UTC. The result is at the top of the page.

Countdown9

T−38:0011:41 PMLaunch director verifies go for propellant load
T−35:0011:44 PMStart of liquid oxygen loading in the first stage
T−35:0011:44 PMStart of propelland loading
T−16:0012:03 AMStart of liquid oxygen loading in the second stage
T−7:0012:12 AMStart of engine chilling
T−1:0012:18 AMThe onboard computer takes control over the countdown and runs last checks
T−1:0012:18 AMFuel tanks are pressurized to flight levels
T−0:4512:19 AMLaunch director verifies go for launch
T−0:0312:19 AMStart of the engine ignition sequence

Show the countdown (9 steps)

T−38:0011:41 PMLaunch director verifies go for propellant load
T−35:0011:44 PMStart of liquid oxygen loading in the first stage
T−35:0011:44 PMStart of propelland loading
T−16:0012:03 AMStart of liquid oxygen loading in the second stage
T−7:0012:12 AMStart of engine chilling
T−1:0012:18 AMThe onboard computer takes control over the countdown and runs last checks
T−1:0012:18 AMFuel tanks are pressurized to flight levels
T−0:4512:19 AMLaunch director verifies go for launch
T−0:0312:19 AMStart of the engine ignition sequence

Ascent6

T+0:0012:19 AMFirst upwards movement of the rocket
T+1:0712:20 AMMaximum dynamic pressure
T+2:2512:22 AMCut-off of the main engine
T+2:2912:22 AMSeparation of the second stage from the first
T+2:3612:22 AMFirst start of the second engine
T+2:5412:22 AMSeparation of the payload fairing

Booster Return4

T+6:0612:25 AMStart of the atmospheric entry burn
T+6:3012:26 AMEnd of the atmospheric entry burn
T+7:5012:27 AMStart of the first stage landing burn
T+8:1312:28 AMLanding of the first stage

Second Stage and Payload4

T+8:4012:28 AMFirst cut-off of the second engine
T+53:361:13 AMSecond start of the second engine
T+53:381:13 AMSecond cut-off of the second engine
T+1:02:301:22 AMDeployment of the Starlink stack from the rocket

Mission

A batch of 26 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.

Launch Provider

SpaceX

Commercial · United States of America · Founded 2002 · CEO Elon Musk

Space Exploration Technologies Corp., known as SpaceX, is an American aerospace manufacturer and space transport services company headquartered in Hawthorne, California. It was founded in 2002 by entrepreneur Elon Musk with the goal of reducing space transportation costs and enabling the colonization of Mars. SpaceX operates from many pads, on the East Coast of the US they operate from SLC-40 at Cape Canaveral Space Force Station and historic LC-39A at Kennedy Space Center. They also operate from SLC-4E at Vandenberg Space Force Base, California, usually for polar launches. Another launch site is being developed at Boca Chica, Texas.

Launches

742

Successful

727

98%

Landings

687

of 715

Upcoming

136

scheduled

FliesFalcon Starship Dragon

All SpaceX launches Website Wikipedia

Updates

May 10 · 2:01 AM
Launch success.
Cosmic_Penguin
May 10 · 12:20 AM
Liftoff
SwGustav
May 10 · 12:09 AM
Unofficial Re-stream by SPACE AFFAIRS has started
Launch Library 2
May 10 · 12:01 AM
Now targeting May 10 at 00:19 UTC
SwGustav
May 9 · 4:52 PM
Tweaked T-0.
Cosmic_Penguin

Show earlier updates

May 8 · 11:14 PM
GO for launch.
Cosmic_Penguin
May 5 · 11:37 PM
Tweaked launch window.
Cosmic_Penguin
May 4 · 3:07 PM
NET May 10 UTC.
Cosmic_Penguin
May 4 · 6:14 AM
Delayed TBD with removal of official webpage.
Cosmic_Penguin
May 3 · 6:50 PM
New T-0 is accurate to the second.
Cosmic_Penguin
May 3 · 5:09 PM
Now targeting May 04 at 17:59 UTC
hitura-nobad
May 3 · 4:00 PM
New T-0.
Cosmic_Penguin
May 3 · 3:10 PM
New T-0.
Cosmic_Penguin
May 3 · 3:19 AM
GO for launch.
Cosmic_Penguin
Apr 30 · 7:54 PM
NET May 3.
Cosmic_Penguin
Apr 28 · 6:28 PM
Delayed to NET May 2.
Cosmic_Penguin
Apr 23 · 5:32 PM
Delayed to NET May 1.
Cosmic_Penguin
Apr 22 · 6:34 PM
Added launch.
Cosmic_Penguin

Falcon 9 Block 5

Vehicle history

Height

70m

Diameter

3.6m

To low Earth orbit

22,800kg

Liftoff thrust

7,607kN

Space Launch Now for iOS and Android

Notifications before every launch you follow, live countdowns on your home screen and watch, and webcasts as they start.

See what's in the app

Scan to open on your phone

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SpaceXLaunch SuccessfulCommunications

Starlink Group 15‑3

Falcon 9 Block 5

Launched Sat, May 10 · 12:19:50 AM UTC2025-05-10 00:19:50 UTCSpace Launch Complex 4E, Vandenberg SFB, CA, USA

Reached orbit
Booster landed on Of Course I Still Love You

Follow SpaceX in the app Watch the replay

Success

Reached Low Earth Orbit

The second stage shut down at T+8:40.

Landed

B1081 Landed

The first stage landed on Of Course I Still Love You, on its 14th flight.

Worldwide

97th

orbital launch attempt in 2025

SpaceX

56th

launch this year

Space Launch Complex 4E

17th

launch from this pad this year

Pad turnaround

11 d 3 h

since the pad's previous launch

Replay

Replay: SpaceX Starlink Group 15-3

The Flight Plan

Planned times, from liftoff at 12:19 AM UTC. The result is at the top of the page.

Countdown9

T−38:0011:41 PMLaunch director verifies go for propellant load
T−35:0011:44 PMStart of liquid oxygen loading in the first stage
T−35:0011:44 PMStart of propelland loading
T−16:0012:03 AMStart of liquid oxygen loading in the second stage
T−7:0012:12 AMStart of engine chilling
T−1:0012:18 AMThe onboard computer takes control over the countdown and runs last checks
T−1:0012:18 AMFuel tanks are pressurized to flight levels
T−0:4512:19 AMLaunch director verifies go for launch
T−0:0312:19 AMStart of the engine ignition sequence

Show the countdown (9 steps)

T−38:0011:41 PMLaunch director verifies go for propellant load
T−35:0011:44 PMStart of liquid oxygen loading in the first stage
T−35:0011:44 PMStart of propelland loading
T−16:0012:03 AMStart of liquid oxygen loading in the second stage
T−7:0012:12 AMStart of engine chilling
T−1:0012:18 AMThe onboard computer takes control over the countdown and runs last checks
T−1:0012:18 AMFuel tanks are pressurized to flight levels
T−0:4512:19 AMLaunch director verifies go for launch
T−0:0312:19 AMStart of the engine ignition sequence

Ascent6

T+0:0012:19 AMFirst upwards movement of the rocket
T+1:0712:20 AMMaximum dynamic pressure
T+2:2512:22 AMCut-off of the main engine
T+2:2912:22 AMSeparation of the second stage from the first
T+2:3612:22 AMFirst start of the second engine
T+2:5412:22 AMSeparation of the payload fairing

Booster Return4

T+6:0612:25 AMStart of the atmospheric entry burn
T+6:3012:26 AMEnd of the atmospheric entry burn
T+7:5012:27 AMStart of the first stage landing burn
T+8:1312:28 AMLanding of the first stage

Second Stage and Payload4

T+8:4012:28 AMFirst cut-off of the second engine
T+53:361:13 AMSecond start of the second engine
T+53:381:13 AMSecond cut-off of the second engine
T+1:02:301:22 AMDeployment of the Starlink stack from the rocket

Mission

A batch of 26 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.

Launch Provider

SpaceX

Commercial · United States of America · Founded 2002 · CEO Elon Musk

Launches

742

Successful

727

98%

Landings

687

of 715

Upcoming

136

scheduled

FliesFalcon Starship Dragon

All SpaceX launches Website Wikipedia

Updates

May 10 · 2:01 AM
Launch success.
Cosmic_Penguin
May 10 · 12:20 AM
Liftoff
SwGustav
May 10 · 12:09 AM
Unofficial Re-stream by SPACE AFFAIRS has started
Launch Library 2
May 10 · 12:01 AM
Now targeting May 10 at 00:19 UTC
SwGustav
May 9 · 4:52 PM
Tweaked T-0.
Cosmic_Penguin

Show earlier updates

May 8 · 11:14 PM
GO for launch.
Cosmic_Penguin
May 5 · 11:37 PM
Tweaked launch window.
Cosmic_Penguin
May 4 · 3:07 PM
NET May 10 UTC.
Cosmic_Penguin
May 4 · 6:14 AM
Delayed TBD with removal of official webpage.
Cosmic_Penguin
May 3 · 6:50 PM
New T-0 is accurate to the second.
Cosmic_Penguin
May 3 · 5:09 PM
Now targeting May 04 at 17:59 UTC
hitura-nobad
May 3 · 4:00 PM
New T-0.
Cosmic_Penguin
May 3 · 3:10 PM
New T-0.
Cosmic_Penguin
May 3 · 3:19 AM
GO for launch.
Cosmic_Penguin
Apr 30 · 7:54 PM
NET May 3.
Cosmic_Penguin
Apr 28 · 6:28 PM
Delayed to NET May 2.
Cosmic_Penguin
Apr 23 · 5:32 PM
Delayed to NET May 1.
Cosmic_Penguin
Apr 22 · 6:34 PM
Added launch.
Cosmic_Penguin

Falcon 9 Block 5

Vehicle history

Height

70m

Diameter

3.6m

To low Earth orbit

22,800kg

Liftoff thrust

7,607kN

Next From Vandenberg SFB

Vandenberg SFB schedule

Oct30Fri

Starlink Group 15-18SpaceX · Falcon 9 Block 5 · Space Launch Complex 4E, Vandenberg SFB, CA, USALow Earth OrbitGo for launch4:02 AM UTC Nov2Mon

USSF-432SpaceX · Falcon 9 Block 5 · Space Launch Complex 4E, Vandenberg SFB, CA, USALow Earth OrbitGo for launch1:56 AM UTC

Space Launch Now for iOS and Android

Notifications before every launch you follow, live countdowns on your home screen and watch, and webcasts as they start.

See what's in the app

Scan to open on your phone

Starlink Group 15‑3

Replay

More Videos

The Flight Plan

Countdown9

Ascent6

Booster Return4

Second Stage and Payload4

Mission

SpaceX

Updates

Falcon 9 Block 5

Starlink Group 15‑3

Replay

More Videos

The Flight Plan

Countdown9

Ascent6

Booster Return4

Second Stage and Payload4

Mission

SpaceX

Updates

Falcon 9 Block 5

Next From Vandenberg SFB

Next From Vandenberg SFB

Starlink Group 15‑3

Replay

More Videos

The Flight Plan

Countdown9

Ascent6

Booster Return4

Second Stage and Payload4

Mission

SpaceX

Updates

Falcon 9 Block 5

Never Miss a Launch.

Starlink Group 15‑3

Replay

More Videos

The Flight Plan

Countdown9

Ascent6

Booster Return4

Second Stage and Payload4

Mission

SpaceX

Updates

Falcon 9 Block 5

Next From Vandenberg SFB

Never Miss a Launch.

Next From Vandenberg SFB