International Space Station

Statement on International Space Station Leak Investigation

Below is NASA’s statement about the International Space Station Leak Investigation:

On Aug. 29, 2018 a small hole was discovered on the International Space Station. This resulted in a pressure leak. The hole has been identified and fixed by space station crew.

Russian media recently reported that General Director Rogozin said the hole was not a manufacturing defect. Ruling out a manufacturing defect indicates that this is an isolated issue which does not categorically affect future production.

This conclusion does not necessarily mean the hole was created intentionally or with mal-intent. NASA and Roscosmos are both investigating the incident to determine the cause. The International Space Station Program is tentatively planning a spacewalk in November to gather more information.

On October 11, American Astronaut Nick Hague and Russian Cosmonaut Alexey Ovchinin will launch to the International Space Station on a Russian Soyuz MS-10 spacecraft from the Baikonur Cosmodrome in Kazakhstan. Administrator Bridenstine is scheduled to attend the launch and plans to meet with Mr. Rogozin. This will be their first in-person meeting. They had a telephone call on September 12 during which they discussed the International Space Station leak.

For more information about the ISS, visit:

https://www.nasa.gov/station

      

NASA Space Mission

NASA Television to Air Launch of Nasa Astronaut on First Space Mission    

At the Baikonur Cosmodrome in Kazakhstan, Expedition 57 crew members Alexey Ovchinin of the Russian space agency Roscosmos (left) and Nick Hague of NASA (right) pose for pictures in front of their Soyuz MS-10 spacecraft during final prelaunch training Sept. 26, 2018. Ovchinin and Hague will launch Oct. 11, 2018, in the Soyuz from the Baikonur Cosmodrome for a six-month mission on the International Space Station.

Credits: NASA/Victor Zelentsov

Editor's Note: Advisory updated Oct. 8 to reflect earlier hatch opening coverage time.

Astronaut Nick Hague, who joined NASA’s astronaut corps in 2013, is preparing to launch Thursday, Oct. 11, on his first space mission – a six-month stay on the International Space Station. The launch and arrival at the space station will air on NASA Television and the agency’s website.

Hague and Alexey Ovchinin of the Russian space agency Roscosmos will launch from the Baikonur Cosmodrome in Kazakhstan at 4:40 a.m. EDT (2:40 p.m. Kazakhstan time) on a four-orbit, six-hour journey to dock to the station at 10:44 a.m.

Less than two hours after arrival, hatches between the Soyuz and the station will open and they will join Expedition 57 Commander Alexander Gerst of ESA (European Space Agency, NASA Flight Engineer Serena Auñón-Chancellor and Roscosmos Flight Engineer Sergey Prokopyev, who arrived at the station in June.

Complete coverage of launch and docking activities are as follows:

• 3:30 a.m. – Launch coverage begins
• 10 a.m. – Docking coverage begins
• 12:15 p.m. – Hatch opening and welcome coverage

Beginning Tuesday, Oct. 9, video of the crew’s prelaunch activities in Baikonur will air on NASA TV leading up to the launch.

The crew members of Expedition 57 will continue work on hundreds of experiments in biology, biotechnology, physical science and Earth science aboard the International Space Station, humanity’s only permanently occupied microgravity laboratory.

3. Error Handling

The next feature we going to cover are the changes to Error Handling. Handling fatal errors in the past has been next to impossible in PHP. A fatal error would not invoke the error handler and would simply stop your script. On a production server, this usually means showing a blank white screen, which confuses the user and causes your credibility to drop. It can also cause issues with resources that were never closed properly and are still in use or even locked.

In PHP 7, an exception will be thrown when a fatal and recoverable error occurs, rather than just stopping the script. Fatal errors still exist for certain conditions, such as running out of memory, and still behave as before by immediately stopping the script. An uncaught exception will also continue to be a fatal error in PHP 7. This means if an exception thrown from an error that was fatal in PHP 5 goes uncaught, it will still be a fatal error in PHP 7.

I want to point out that other types of errors such as warnings and notices remain unchanged in PHP 7. Only fatal and recoverable errors throw exceptions.

In PHP 7, Error and Exception both implement the new Throwable class. What that means is that they basically work the same way. And also, you can now use Throwable in try/catch blocks to catch both Exception and Error objects. Remember that it is better practice to catch more specific exception classes and handle each accordingly. However, some situations warrant catching any exception (such as for logging or framework error handling). In PHP 7, these catch-all blocks should catch Throwable instead of Exception.