Space & Planetary Science: March 2015 Archives

Earth-like Tatooines From Star Wars May Be Common

"Luke Skywalker's home in "Star Wars" is the desert planet Tatooine, with twin sunsets because it orbits two stars. So far, only uninhabitable gas-giant planets have been identified circling such binary stars, and many researchers believe rocky planets cannot form there. Now, mathematical simulations show that Earth-like, solid planets such as Tatooine likely exist and may be widespread."

NASA OIG: NASA's Management of the Deep Space Network, NASA OIG

"Although DSN is meeting its current operational commitments, budget reductions have challenged the Network's ability to maintain these performance levels and threaten its future reliability. ... If budget reductions continue, DSN faces an increased risk that it will be unable to meet future operational commitments or complete the upgrade project on schedule. We also found that NASA, JPL, and DSN have significantly deviated from Federal and Agency policies, standards, and governance methodologies for the security of the Network's IT and physical infrastructure."

Statement by John Grunsfeld, NASA

"The project has done an excellent job of managing its budget reserves, and this ability to efficiently address problems as they come up has enabled Webb to remain on schedule for its 2018 launch."

Statement by Cristina Chaplain, GAO

"The proximity of all the elements and major subsystem schedules to the critical path means that a delay on any of the elements or major subsystems may reduce the overall project schedule reserve further, which could put the overall project schedule at risk. As a result, the project has less flexibility to choose which issues to mitigate. While the project has been able to reorganize work when necessary to mitigate schedule slips thus far, with further progression into subsequent integration and testing periods, flexibility will be diminished because work during integration and testing tends to be more serial, as the initiation of work is often dependent on the successful and timely completion of the prior work. This is particularly the case with JWST given its complexity."

- Hearing Charter

- Statements: Rep. Lamar Smith, Rep. Steven Palazzo, John Mather, Jeffrey Grant, John Grunsfeld, and Cristina Chaplain

Space Weather Alert: Geomagnetic K-index of 8 (G4)

"Space Weather Message Code: WARK07
Serial Number: 47
Issue Time: 2015 Mar 17 1642 UTC

EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 46
Valid From: 2015 Mar 17 1215 UTC
Now Valid Until: 2015 Mar 17 1900 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon."

MMS Flock Leaves Earth

Magnetospheric Multiscale Spacecraft Launched

"Following a successful launch at 10:44 p.m. EDT Thursday, NASA's four Magnetospheric Multiscale (MMS) spacecraft are positioned in Earth's orbit to begin the first space mission dedicated to the study of a phenomenon called magnetic reconnection. This process is thought to be the catalyst for some of the most powerful explosions in our solar system."



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This page is an archive of entries in the Space & Planetary Science category from March 2015.

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