Welcome to SESDA

  • SESDA Supports Successful Rocket Launch From Norway

ADNET Systems Inc. has been awarded the Space and Earth Science Data Analysis (SESDA-IV) contract by the National Aeronautics and Space Administration (NASA) to support the Goddard Space Flight Center (GSFC) in Greenbelt, Maryland. SESDA-IV is a five-year cost-plus fixed-fee contract with a total potential value of approximately $250 million.

Under SESDA-IV, ADNET will provide a broad range of services to support Earth and Space science research and development, data operations, as well as activities in information system technologies, engineering, and science communication, education and public outreach that enable the Sciences and Exploration Directorate to successfully carry out its science missions at the Goddard Space Flight Center (GSFC).

SESDA is the premier Space and Earth science contract at GSFC and this award represents the third straight time ADNET Systems has been selected for this prestigious contract. Over 300 scientists, engineers, and education outreach specialists support the SESDA contract through a broad range of science disciplines, including solar and space plasma physics, astrophysics and astronomy, planetary studies, atmospheric science and climatology, oceanography, land processes, geodynamics, and solid earth geographics. “All of us at ADNET are pleased and excited to continue our partnership with NASA and we are thrilled to be selected as the SESDA contractor for the third time.” said Ashok Jha, President and CEO of ADNET.

Read more about SESDA and ADNET Systems


SESDA Team Investigates Betelgeuse Surface Mass Ejection

June 14, 2022

STEREO Ahead Contributes to Study of Historic Betelgeuse Dimming

The Astrophysical Journal has accepted for publication the paper, “The Great Dimming of Betelgeuse: A Surface Mass Ejection (SME) and its Consequences” by Dupree et al. The paper analyzed special data taken by the SESDA team using the SECCHI/HI-2 telescope on STEREO Ahead, taking advantage of the spacecraft’s unique position, and rolling by 180°, to observe Betelgeuse when it could not easily be observed from Earth. The paper concludes that a substantial surface mass ejection (SME) occurred and moved out through the extended atmosphere of the supergiant. Following the SME, Betelgeuse was left with a cooler average photosphere, an unusual short photometric oscillation, reduced velocity excursions, and the disappearance of the ~400-day pulsation in the optical and radial velocity for more than two years following the Great Dimming. The first indication that Betelgeuse was affected by the SME was provided by the SECCHI observations.

SESDA Supports Successful Rocket Launch From Norway

June 3, 2022

Endurance rocket launch

Congratulations to NASA/GSFC and its partners on the successful launch of the Endurance suborbital rocket on May 10, 2022 at from Ny-Ålesund in Svalbard, Norway. Despite numerous challenges that included blizzard weather conditions, delayed shipments of essential flight hardware, a snow mobile accident, and an extensive COVID-19 outbreak at the launch base, the team bravely persevered with resolving last minute technical problems in time for a narrow launch window of low solar and geomagnetic activity. SESDA instrument engineers provided critical support to the development, integration, and testing of the E-field booms and Dual Electrostatic Analyzers (DESA) which are vital to achieving the mission’s primary goal of measuring the Earth’s weak global electric potential.

Intranet Portal

Intranet Login