For Release: Oct. 12, 2018

NASA/CXC

At approximately 1355 GMT on October 10, 2018, NASA’s Chandra X-ray Observatory entered Safe Mode, where the telescope’s instruments are put into a safe configuration, critical hardware is swapped to back-up units, the spacecraft points so that the solar panels get maximum sunlight, and the mirrors point away from the Sun. Analysis of available data indicates the transition to safe mode was nominal, i.e., consistent with normal behavior for such an event. All systems functioned as expected and the scientific instruments are safe. The cause of the Safe Mode transition is currently under investigation, and we will post more information when it becomes available.

Chandra is 19 years old, which is well beyond the original design lifetime of 5 years. In 2001, NASA extended its lifetime to 10 years. It is now well into its extended mission and it is expected to continue carrying out forefront science for many years to come.

For information about NASA and other agency programs, visit:

https://www.nasa.gov.

-end-

Media Contacts:

Felicia Chou
NASA Headquarters, Washington
202-358-0257
felicia.chou@nasa.gov

Molly Porter
Marshall Space Flight Center, Huntsville, Alabama
256-544-0034
molly.a.porter@nasa.gov

Megan Watzke
Chandra X-ray Center, Cambridge, Massachusetts
617-496-7998
mwatzke@cfa.harvard.edu

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Revised: April 05, 2019