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  • SESDA Scientist Helps Reveal Additional Strange Behavior from Betelgeuse

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


High End Computer Networking Advances

December 11, 2020

This year’s High End Computer Networking (HECN) Super Computing 2020 (SC20) Wide Area disk-to-disk demonstration was to be performed over a 4x100Gb/s ESNet pathway that continues onto additional wide-area networks. Because ESNet was in the process of upgrading their network they were unable to provide this connection, however plans are to perform these tests in January 2021. The HECN team built another server this year which has several improvements over last year’s demo system: greatly increased I/O bandwidth using the AMD EPYC processor, with each processor having 128 lanes of PCIe Gen4, the PCIe Gen4 2x200G Ethernet NIC (using it as a 2x100G NIC to interconnect into existing infrastructure), and higher performance PCIe Gen4 NVMe drives. The previous server relied on multiple PCIe switches to expand the two X16 PCIe Gen3 paths from each processor to interconnects for the PCIe NICs and NVMe drives.

SESDA Scientist Helps Reveal Additional Strange Behavior from Betelgeuse

August 20, 2020

An image from the Heliospheric Imager aboard NASA’s STEREO spacecraft shows the star Betelgeuse, circled. For several weeks in 2020, STEREO was the only observatory making measurements of Betelgeuse because of the spacecraft’s unique position in space. Credits: NASA/STEREO/HI

The red giant star Betelgeuse has intrigued astronomers by showing unusual dimming over the past several months. Led by a SESDA scientist, a team of investigators from Harvard Smithsonian Center for Astrophysics, Naval Research Laboratory, and Rutherford Appleton Lab used observations from the STEREO spacecraft to confirm that Betelgeuse is dimming again. This finding is surprising as Betelgeuse typically goes through brightness cycles lasting about 420 days, with the previous minimum in February 2020. Hence, this dimming is happening unexpectedly early and is currently a mystery. The science team reported these observations via The Astronomer’s Telegram on July 28, 2020.

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