June 11, 2025: The morning of June 11 saw a further delay in Indian astronaut, Group Captain Shubhanshu Shukla’s journey to the International Space Station (ISS) on board the American rocket Falcon-9 along with three other crew members as part of the Axion-4 scientific mission.
“Standing down from tomorrow’s Falcon 9 launch of Ax-4 to the @Space_Station to allow additional time for SpaceX teams to repair the LOx leak identified during post static fire booster inspections. A statement that was posted on X by SpaceX, the American space technology company that is executing the mission alongside Axiom Space and the National Aeronautics and Space Administration (NASA), read, "Once complete – and pending Range availability – we will share a new launch date." In point of fact, on June 10, a day after Axiom-4 was postponed due to weather, SpaceX used the same Falcon-9 series rocket to launch 23 Starlink satellites from the US Air Force's Cape Canaveral Space Force Station in Florida, which is adjacent to the NASA center. These satellites are intended to provide internet services. Space mission vulnerabilities
Postponing rocket launches is not uncommon and results from various factors such as weather, technical glitches or other miscellaneous factors. In the past NASA and SpaceX have temporarily put off some high-profile launches. Even ISRO has rescheduled some of its launches.
A rocket is permitted to take off during specific launch windows and time periods. The weather, the intended trajectory, the size and capability of the rocket, the intended positioning of the payload, Earth's position in relation to other planets, and the rendezvous point in space all play a role in these variations. A launch window can last anywhere from a few hours to several days, while a launch period can last several days. If the widow or period is missed, the launch has to wait till the next suitable time is available.
prevailing conditions Weather is the most common reason for deferring rocket launches. Strong winds can make the rocket structurally unstable while on the launch pad or during flight can affect the control parameters and make it veer off course. Its flight stability and trajectory can be affected by wind shear. Rockets are particularly vulnerable to electric discharges during the launch phase, making thunderstorms and lightning a significant risk. If a thunderstorm is predicted within a certain distance of the launch site, the launch will be postponed. Another important factor is the amount of precipitation and cloud cover. Dense cloud cover leading to poor visibility can reduce the ability to monitor the launch and identify any problems that may arise and also make it difficult to visually assess and track the rocket’s trajectory.
If a cloud layer in the launch center’s vicinity is more than 4,500 feet thick or stretches into sub-freezing temperatures, the launch will be put off. Additionally, if there is any kind of precipitation, a rocket cannot launch. Rocket launches are favored by hot weather. Engine performance can be affected by air temperature, and dangerous ice formation can occur at low atmospheric temperatures. General weather conditions, both around the launch center as well as in upper atmosphere in the launch corridor are forecast well in advance by a team of meteorology specialists and are closely monitored as the launch date approaches.
Tech glitches
A rocket is a hugely complex machine comprising thousands of systems, sub-systems, circuits and components, covering metallurgy, electronics, mechanical, electrical, radio-signal, software and chemical domains. A fault or damage to even one component can jeopardize the entire mission.
For this reason, hundreds of sensors collect data up until the last few seconds of a launch to ferret out any possible defect or damage. The countdown also includes visual inspections by scientists and engineers. Each step, from examining and testing components to assembling the rocket and integrating them, is carefully calibrated and monitored in accordance with established protocols, with checks and counterchecks in place.
The flow of high-energy particles in space within or near the trajectory—possibly caused by cosmic activity—can also have an effect on the electronics on board, navigation systems, or signal links with ground control. The launch can be postponed at the last minute even if an aircraft or boat breaches the clean airspace or sea swath.