United Launch Alliance (ULA) recently had to pause its launch of the ViaSat-3 F2 satellite for the second time due to a persistent issue with the booster’s liquid oxygen tank vent valve. The launch was set for 10:16 p.m. EST on November 6, 2025, but the valve problem continued to be a concern. As a result, ULA announced they would announce a new launch date soon.
Initially, the countdown was called off on November 5 when the vent valve failed during pre-launch checks. ULA tried again the following night, but once more, the launch was halted. Launch Director James Whelan highlighted the importance of ensuring all systems were working perfectly before liftoff.
Weather didn’t cooperate either. Thick clouds and rain were present near Cape Canaveral, which led to a 50-50 chance of favorable conditions for launch. Even though controllers prepared the rocket and loaded the liquid oxygen, the sky’s mood painted a different picture.
The ViaSat-3 F2 satellite, weighing about 6 metric tons, is housed in a protective fairing atop the Atlas 5 rocket. When the launch finally occurs, the rocket’s Centaur upper stage will ignite multiple times to send the satellite into geostationary orbit. This mission builds on the first launch of the ViaSat-3 series, carried out by SpaceX in 2023. That mission faced delays due to issues with the satellite’s antenna, highlighting the complexities involved in such high-stakes operations.
According to experts, satellite launches are delicate operations where even minor glitches can lead to significant delays. Brian Belson, a launch weather officer, emphasized the need for good weather conditions. ULA’s focus remains on a smooth and successful launch, using the time to evaluate the hardware and ensure everything is ready for the next attempt.
Viasat aims to significantly enhance communications in the Americas with this satellite, boasting over 1 terabit per second of capacity. It’s expected to enter service in early 2026 after thorough testing in space. This satellite series represents a leap forward in connectivity, potentially reshaping internet access across vast regions.
For more insights into space missions and satellite technology, check sources like NASA or the National Oceanic and Atmospheric Administration (NOAA) for updates and expert analyses.
