SpaceX
SpaceX to livestream Falcon Heavy Block 5 launch debut at 6:15pm ET today
SpaceX is half a day away from the planned launch debut of Falcon Heavy Block 5, a milestone that will also be the rocket’s second launch ever and first mission with a commercial payload.
First and foremost, Falcon Heavy’s job is to safely place the Saudi Arabian communications satellite Arabsat 6A into a high-energy geostationary transfer orbit (GTO) more than 35,000 km (~22,000 mi) above Earth’s surface. Despite the satellite w
This time around, Falcon Heavy will be made entirely out of Block 5 hardware, including three new boosters (likely B1052, B1053, and B1055), a Block 5 upper stage with a Merlin Vacuum engine, and a recovery-optimized “Version 2” payload fairing. Altogether, Falcon Heavy likely weighs upwards of 80,000 kg (175,000 lb) empty and more than 1,420 metric tons (3,125,000 lb) when fully fueled. At liftoff, the Falcon Heavy Block 5 rocket’s 27 Merlin 1D engines are expected to produce no less than 5.1 million pounds (~2300 mT/23,000 kN) of thrust at full throttle, but that figure could rise as high as 5.6 million pounds (2550 mT/25,500 kN) of thrust depending on how one interprets rather vague official numbers from CEO Elon Musk.
Regardless, both Falcon Heavy side boosters will attempt to repeat the iconic side-by-side landings that are now a signature of the rocket’s 2018 launch debut, while the center core – traveling much faster at the point of stage separation – will travel nearly 1000 km (620 mi) downrange for a landing aboard drone ship
Falcon Heavy Flight 2 is made even more exciting by the fact that both of its Block 5 side boosters will be instrumental to a planned third launch of the SpaceX rocket as few as two months later. According to the US Air Force, an agreement was reached with SpaceX to use the opportunity – an intentionally low-risk mission known as Space Test Program 2 (STP-2) – to gain a much higher-fidelity understanding of how SpaceX launches, lands, refurbishes, and relaunches Falcon boosters. Aside from being the last major source of data for the ultimate certification of Falcon Heavy for high-value military launches, the USAF hopes that STP-2 will be a critical step towards opening the doors of launch contract competitions to flight-proven rockets like Falcon 9 and – eventually – Blue Origin’s New Glenn.
SpaceX’s launch webcast will go live approximately 20 minutes before liftoff, with the window stretching from 6:35 pm to 8:31 pm EDT (22:35-00:31 UTC). Weather is expected to be decent and is currently holding around 80% “go” for launch.
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SpaceX and its CEO Elon Musk are starting to shed some light on the potential reasoning for the loss of Starship yesterday, which was lost after a successful launch and catch of the lower-stage booster.
Starship was lost during its ascension, and debris rained down over the Caribbean less than an hour after SpaceX lost all communication with the spacecraft.
A few hours after the launch was over, SpaceX started to shed some light after looking at preliminary data that the rocket left behind.
The company said that a fire developed in the aft section of Starship:
“Following stage separation, the Starship upper stage successfully lit all six Raptor engines and performed its ascent burn to space. Prior to the burn’s completion, telemetry was lost with the vehicle after approximately eight and a half minutes of flight. Initial data indicates a fire developed in the aft section of the ship, leading to a rapid unscheduled disassembly with debris falling into the Atlantic Ocean within the predefined hazard areas.”
Additionally, Musk said that there was some sort of oxygen or fuel leak in the cavity above the ship engine firewall.
The leak was evidently large enough to build more pressure than the vent was able to handle:
🚨Elon Musk has also said an oxygen or fuel leak in the cavity above the ship engine firewall could be the cause of the anomaly. https://t.co/BgLkdA9Kk1
— TESLARATI (@Teslarati) January 17, 2025
Some also seemed to recognize evidence of fires throughout the flight of Starship, which is obviously an anomaly:
Unconfirmed but what looks to be fire at the hinge of Starship’s flap. A potential RUD? We await as we get any confirmation from SpaceX.
They do not have comms with the spacecraft as this moment. pic.twitter.com/Cn1EF4AHpv
— Mihir Tripathy (@mihirneal) January 16, 2025
There will be more information regarding the loss of Starship in the coming days and weeks, but Musk already believes that a bit of fire suppression and more volume in the cavity above the ship engine firewall could fix the issue.
“Nothing so far suggests pushing next launch past next month,” he said, so Flight 8 could happen sometime in February.
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SpaceX completed its seventh launch of Starship on Thursday, accomplishing a clean liftoff and catch of the first-stage booster. However, the upper stage was lost after its ascent.
The launch took place just a few minutes after 5 p.m. on the East Coast, as the first attempts at getting Starship in the air for the seventh time were delayed by weather both last week and this week.
Conditions were favorable on Thursday as SpaceX looked to follow up a successful campaign by Blue Origin, Jeff Bezos’s company, earlier today.
SpaceX went into the seventh Starship launch with plans for a catch attempt of the first-stage booster, something it attempted and completed during the fifth test launch last year. It decided to skip a catch attempt with the sixth test flight as conditions were not aligned.
For now, SpaceX is extremely selective as to when it attempts catches.
However, it was successful during this attempt, its second completed catch:
🚨 🚀 Here is @SpaceX’s full catch of the Lower Stage Booster from Starship Flight 7! pic.twitter.com/IXIRAGr1Md
— TESLARATI (@Teslarati) January 16, 2025
This flight differed from previous launches as SpaceX rolled out several improvements to the rocket and the processes as it featured plans to do a Starlink deployment simulation and had various adjustments to flap placement and avionics.
These plans were disrupted by the fact that SpaceX lost all communications with Starship about ten minutes into the flight, which the aerospace company confirmed was a result of losing the spacecraft sometime during its ascent.
🚀🚨 Telemetry on Starship has been lost. All comms with the ship have been lost, and SpaceX’s livestream says this is an “anomaly.”
“We are assuming the ship has been lost.” pic.twitter.com/fyyCNuXVRg
— TESLARATI (@Teslarati) January 16, 2025
Although the catch was successful, the loss of the actual rocket seemed to be a huge damper on the entire event. SpaceX confirmed several minutes after the loss of communications that the rocket was destroyed and was lost.
It was its first failure since the second Starship launch in November 2023. SpaceX had no answers for why the rocket was destroyed and lost.
We will keep you updated in the coming days.
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SpaceX has confirmed a new target date for the seventh Starship test launch after weather in Texas delayed the first scheduled date for “three or four days.”
The company is now targeting the launch for Monday, January 13, at 4 p.m. CST or 5 p.m. EST. The launch date is not set in stone as any variety of delays could impact this, but SpaceX hopes to finally take off after a delay that pushed it back from January 10.
🚨 STARSHIP LAUNCH DATE: @SpaceX says Starship’s 7th test flight is now targeted for Monday, January 13 at 4pm CST
— TESLARATI (@Teslarati) January 8, 2025
What’s new with this Starship launch
With this being the seventh test launch of Starship, there are several things that the company will change and hope to accomplish. All of these launches are done in preparation for eventually taking flight to Mars, something that will happen next year, according to CEO Elon Musk.
First, SpaceX is rolling out a next-generation ship with “significant upgrades.” Forward flaps have been made smaller and are repositioned away from the heat shield, which will “reduce their exposure to reentry heating.”
There is also a 25 percent increase in propellant volume, a new fuel feedline system for the Raptor vacuum engines, and a better-than-ever propulsion avionics module that will control the valves and reading sensors.
Avionics, as a whole, underwent a redesign and now have more capability and redundancy for missions as they become more complex.
Starlink test
SpaceX is also planning to deploy 10 Starlink simulators that are similar in size and weight to the next-generation Starlink satellites:
“While in space, Starship will deploy 10 Starlink simulators, similar in size and weight to next-generation Starlink satellites as the first exercise of a satellite deploy mission. The Starlink simulators will be on the same suborbital trajectory as Starship, with splashdown targeted in the Indian Ocean. A relight of a single Raptor engine while in space is also planned.”
Ship return and catch
There will be several experiments that have to do with returning Starship and various catch scenarios and sequences. One of which will see “a significant number of tiles be removed to stress-test vulnerable areas across the vehicle.”
The ship’s reentry profile was also intentionally designed to test the structural limits of the flaps while at the point of maximum dynamic pressure during reentry.
Currently, SpaceX did not detail whether it would attempt another catch during this test launch. These are usually game-time decisions.
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