Watch: SpaceX sends Falcon 9 uncrewed Dragon mission to the ISS from KSC

Update: Liftoff of the Falcon 9 rocket and uncrewed Dragon vessel at 11:47 a.m. EDT, Monday, June 5, from Kennedy Space Center in Florida followed by a booster landing on a drone ship stationed in the Atlantic Ocean a short time later. Read our full post-launch story here.

Follow live updates and video as SpaceX targets 11:47 a.m. EDT Monday, June 5, for the launch of a cargo resupply mission to the International Space Station from Kennedy Space Center in Florida.

If weather holds and the countdown proceeds as planned, a Falcon 9 rocket will boost an uncrewed Dragon capsule from pad 39A with thousands of pounds of cargo, science experiments, and supplies for astronauts on the ISS. There is no window for this mission; Falcon 9 must fly on time to "catch up" with the ISS overhead or delay to another day.

After liftoff and a flight toward the northeast, the rocket's first stage will target a landing on the Shortfall of Gravitas drone ship in the Atlantic Ocean. This will mark the 28th launch of the year after yesterday's Falcon 9 mission carrying 22 Starlink satellites flew from nearby Cape Canaveral Space Force Station.

Updates from Monday's event below:

Dragon spacecraft separation:

11:59 a.m. EDT: The uncrewed Dragon vessel has separated from the Falcon 9 upper stage and is on its way to catch up with the International Space Station in orbit. Docking is expected Tuesday morning, June 6, around 5:50 a.m. EDT.

— Jamie Groh

The Falcon 9 has landed:

11:56 a.m. EDT: The Falcon 9 first-stage booster successfully landed aboard the "A Shortfall of Gravitas" drone ship stationed in the Atlantic Ocean.

— Jamie Groh

Liftoff!

11:47 a.m. EDT: Liftoff of Falcon 9 from Kennedy Space Center! The rocket will now fly along a northeastern trajectory and target a landing on the "A Shortfall of Gravitas" drone ship about eight minutes later. Here's the post-launch timeline:

T-plus:

• 00:01:12 minutes Max Q (moment of peak mechanical stress on the rocket)

• 00:02:31 minutes 1st Stage Main Engine Cutoff (MECO)

• 00:02:34 minutes 1st and 2nd Stages Separate

• 00:02:41 minutes 2nd Stage Engine Starts

• 00:06:46 minutes 1st Stage Entry Burn Begins

• 00:07:07 minutes 1st Stage Entry Burn Ends

• 00:08:21 minutes 1st Stage Landing Burn Begins

• 00:08:50 minutes 2nd Stage Engine Cutoff (SECO-1)

• 00:08:51 minutes 1st Stage Landing

• 00:12:05 minutes Dragon Separates from 2nd Stage

• 00:12:53 minutes Dragon Nosecone Open Sequence Begins

— Jamie Groh

T-minus ten minutes:

11:37 a.m. EDT: Ten minutes remain until SpaceX attempts to launch a Falcon 9 rocket from Kennedy Space Center with an uncrewed cargo Dragon vessel on a resupply mission to the ISS. NASA reports that weather chances have improved to an 80% chance of "go" for an on-time liftoff.

Here's what's left in the countdown:

T-minus:

• 00:07:00: Falcon 9 begins pre-launch engine chill

• 00:05:00: Dragon transitions to internal power

• 00:01:00: Command flight computer to begin final pre-launch checks

• 00:01:00: Propellant tanks pressurize for flight

• 00:00:45: SpaceX Launch Director verifies go for launch

• 00:00:03: Engine controller commands engine ignition sequence to start

• 00:00:00: Falcon 9 liftoff

— Jamie Groh

Fueling underway:

11:16 a.m. EDT: SpaceX hasn't provided an update, but frost is beginning to build around the base of the Falcon 9 rocket at Pad 39A, indicating that fueling operations are underway ahead of an 11:47 a.m. EDT liftoff. The launch attempt this morning is instantaneous which means if it doesn't launch exactly on time it will have to wait until another day to try again.

— Jamie Groh

Still counting down:

11:15 a.m. EDT: SpaceX and NASA continue counting down toward an 11:47 a.m. liftoff, but no word yet if fueling operations have started.

— Jamie Groh

Latest weather report:

10:55 a.m. EDT: SpaceX and NASA teams are continuing to work toward liftoff at 11:47 a.m. EDT of the Falcon 9 and uncrewed Dragon vessel. SpaceX reports that the chance of favorable liftoff weather for today's instantaneous launch is 60%.

— Jamie Groh

T-minus one hour:

10:47 a.m. EDT: SpaceX continues counting down to liftoff of its 28th cargo resupply mission to the International Space Station slated for 11:47 a.m. EDT. Forecasters with the Space Force's Space Launch Delta 45 said in a report on Sunday that booster recovery conditions downrange at the drone ship's location in the Atlantic Ocean were a "moderate" risk for today's mission. If the weather is "go" this morning, fueling of the Falcon 9 rocket should begin at 11:12 a.m. EDT.

Stay tuned.

— Jamie Groh

Welcome to live coverage:

9:30 a.m. EDT: Good morning. Welcome to live coverage of the next attempt to launch SpaceX's 28th cargo resupply mission to the International Space Station for NASA.

Launch teams at Launch Complex 39A at Kennedy Space Center in Florida are continuing to work toward a liftoff at 11:47 a.m. EDT this morning. Previous attempts to launch this mission on Saturday and Sunday were waved off due to unfavorable weather.

Stay tuned for more updates as we get closer to the beginning of fueling procedures which, if everything checks out, should begin at 11:12 a.m. EDT. While we wait, here's the list of countdown milestones still left to get through this morning.

T-minus:

• 00:38:00: SpaceX Launch Director verifies go for propellant load

• 00:35:00: RP-1 (rocket grade kerosene) loading begins

• 00:35:00: 1st stage LOX (liquid oxygen) loading begins

• 00:16:00: 2nd stage LOX loading begins

• 00:07:00: Falcon 9 begins pre-launch engine chill

• 00:05:00: Dragon transitions to internal power

• 00:01:00: Command flight computer to begin final prelaunch checks

• 00:01:00: Propellant tanks pressurize for flight

• 00:00:45: SpaceX Launch Director verifies go for launch

• 00:00:03: Engine controller commands engine ignition sequence to start

• 00:00:00: Falcon 9 liftoff

— Jamie Groh

Updates from Sunday's event below:

Scrub! ISS launch delayed due to weather

11 a.m. EDT: SpaceX has confirmed the scrub, which was caused by high winds in the Shortfall of Gravitas drone ship's recovery zone. Teams are now targeting 11:47 a.m. EDT Monday, June 5, for this launch to the ISS. Follow the latest at floridatoday.com/launchschedule.

— Emre Kelly

Weather scrub: After morning launch, SpaceX stands down from second Falcon 9 missions hours later

NASA, SpaceX appear to scrub mission

10:45 a.m. EDT: NASA and SpaceX appear to have scrubbed this launch as countdown clocks are holding and the crew access arm at pad 39A has been extended back to the Dragon capsule. Neither organization have confirmed the scrub; stay tuned.

— Emre Kelly

SpaceX and NASA counting down to CRS-28 liftoff

10:15 a.m. EDT: SpaceX and NASA are counting down to liftoff off today's 28th Commercial Resupply Services launch from Kennedy Space Center in Florida, currently set for 12:12 p.m. EDT. If teams poll "go," fueling of Falcon 9 should start at 11:37 a.m. EDT. Here's the pre-launch timeline:

• T-minus 00:38:00: SpaceX Launch Director verifies go for propellant load

• 00:35:00: RP-1 (rocket grade kerosene) loading begins

• 00:35:00: 1st stage LOX (liquid oxygen) loading begins

• 00:16:00: 2nd stage LOX loading begins

• 00:07:00: Falcon 9 begins pre-launch engine chill

• 00:05:00: Dragon transitions to internal power

• 00:01:00: Command flight computer to begin final prelaunch checks

• 00:01:00: Propellant tanks pressurize for flight

• 00:00:45: SpaceX Launch Director verifies go for launch

• 00:00:03: Engine controller commands engine ignition sequence to start

• 00:00:00: Falcon 9 liftoff

— Emre Kelly

This article originally appeared on Florida Today: Watch: SpaceX sends Falcon 9 uncrewed Dragon mission to the ISS