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Category: satellites – Page 133

PredaSAR successfully completes Critical Design Review to launch world’s largest SAR satellite constellation

PredaSAR has successfully completed its Critical Design Review (CDR) to begin fabrication, testing and launch of its Synthetic Aperture Radar (SAR) spacecraft, in partnership with Tyvak Nano-Satellite Systems. PredaSAR is building and will operate what is predicted to be the world’s largest and most advanced constellation of SAR satellites. The successful CDR completion marks another major milestone in PredaSAR’s journey and follows its recent announcement of a rideshare partnership with SpaceX to launch its first satellite aboard the Falcon 9 launch vehicle.

PredaSAR spacecraft employ an advanced, proprietary radar payload to create 2D Synthetic Aperture Radar images, 3D reconstructions of objects and the Earth’s surface, and customer-tailored data products. SAR satellites provide high-resolution images at any time of day and in any weather condition, overcoming natural limitations of traditional optical satellites. PredaSAR spacecraft possess the latest in space-proven, high quality satellite systems to support scalable and fully capable operations in any low earth orbit. Leveraging its advanced technologies, PredaSAR will deliver critical insights and data products to military and commercial decision makers at the speed of need.

PredaSAR completes Critical Design Review to begin largest SAR satellite constellation — SpaceWatch. Global.

New UK space projects to boost global sustainable development receive £3.4 million cash boost

💥💥💥💥💥💥💥Humanitarian Day, the UK Space Agency announced £3.4 million of new funding for 10 leading-edge projects, backing UK academics using space to tackle global development problems – from the spread of malaria to human trafficking and forced labor. In 2018, there were an estimated 228 million cases and 405,000 deaths from malaria alone.

These projects will develop solutions to global challenges that will open up new opportunities for UK space expertise to help countries overseas to deal with myriad problems. Among the others being backed are space-based solutions that will help protect wildlife habitats in Kenya and another that will improve resilience to flooding in Bangladesh, which is suffering the most prolonged monsoon rains in decades.

On World Humanitarian Day, the UK Space Agency announced £3.4 million of new funding for 10 leading-edge projects, backing UK academics using space to tackle global development problems – from the spread of malaria to human trafficking and forced labor. In 2018, there were an estimated 228 million cases and 405,000 deaths from malaria alone.

Using satellite, air-borne and ground-based sensing technology, academics at The Open University will detect where mosquitoes are most likely to breed, and support efforts to tackle this deadly disease at its source. Once identified, ‘sprayer drones’ will release biocontrol agents that will kill mosquito larvae without affecting other species, as part of the DETECT project.

Uganda is a source and destination country for men, women, and children trafficked for the purposes of forced labor and sexual exploitation. A project backed by the cash injection announced today will see UK academics at the University of Nottingham apply Earth observation technology from satellites to Uganda’s anti-human trafficking and forced labor efforts.

NASA’s Artemis Mission looks to help better agriculture

Innovation is key for developing the future of agriculture and sometimes it comes from unlikely places.

The NASA Artemis Mission is working to develop space exploration, but here on Earth, they are partnering with the University of California Berkeley to use Land Satellite Seven to benefit agriculture.

According to NASA Administrator Jim Bridenstine, “We can use that data from space and combine it with weather stations from Earth, and we can get very precise evapotranspiration measurements, down to a quarter of an acre. What that means is we can provide farmers with very specific irrigation plans.”

The technology is still in the testing phase but could one day make farming a little easier. “Imagine being a farmer and going out into your field with your iPhone, looking at it and having an app on there that tells you exactly what your irrigation needs to be for this quarter of an acre for this type of soil and this type of crop,” Bridenstine states.

NASA looks to partner with private businesses to bring new technologies to the market. “The challenge is land sat only has a revisit of two weeks,” he notes. “Weather changes a lot in two weeks; so, I think there is a future where a commercial company could create lots of satellites that could provide this data to farmers.”

Another project on the International Space Station, called Eco-Stress, measures heat stress in plants using infrared technology. Both projects hope to answer a key question: “Can we use our earth science capabilities to feed more of the world and save water in the central valley of California, and the answer is— yes we can.”

Continue reading “NASA’s Artemis Mission looks to help better agriculture” | >

SES taps SpaceX for two additional Falcon 9 launches

Fleet operator SES on Aug. 20 said it selected SpaceX to launch four recently ordered O3b mPower broadband satellites.

SES’s four-satellite expansion order, announced Aug. 7, further increased its launch needs.

SES has now grouped the satellites into trios for the first three Falcon 9 launches, scheduled for the third quarter of 2021, the first quarter of 2022, and the second half of 2022. The last two satellites are projected to launch in the second half of 2024. Each mission will take place from Cape Canaveral, Florida.

The O3b mPower constellation is designed as a multi-terabit global network capable of aiming gigabits of Ka-band capacity at customers in aviation, government, energy and other sectors. The constellation builds off of SES’s current O3b fleet of 20 satellites built by Thales Alenia Space.

WASHINGTON — Fleet operator SES on Aug. 20 said it selected SpaceX to launch four recently ordered O3b mPower broadband satellites.

The agreement means SpaceX will launch all 11 of SES’s O3b mPower satellites to medium Earth orbit across four Falcon 9 launches. Boeing is building all 11 mPower satellites.

Continue reading “SES taps SpaceX for two additional Falcon 9 launches” | >

NASA Is Tracking a Vast, Growing Anomaly in Earth’s Magnetic Field

NASA is actively monitoring a strange anomaly in Earth’s magnetic field: a giant region of lower magnetic intensity in the skies above the planet, stretching out between South America and southwest Africa.

This vast, developing phenomenon, called the South Atlantic Anomaly, has intrigued and concerned scientists for years, and perhaps none more so than NASA researchers. The space agency’s satellites and spacecraft are particularly vulnerable to the weakened magnetic field strength within the anomaly, and the resulting exposure to charged particles from the Sun.

The South Atlantic Anomaly (SAA) – likened by NASA to a ‘dent’ in Earth’s magnetic field, or a kind of ‘pothole in space’ – generally doesn’t affect life on Earth, but the same can’t be said for orbital spacecraft (including the International Space Station), which pass directly through the anomaly as they loop around the planet at low-Earth orbit altitudes.

New tool helps interpret future searches for life on exoplanets

Is there life on a distant planet? One way astronomers are trying to find out is by analyzing the light that is scattered off a planet’s atmosphere. Some of that light, which originates from the stars it orbits, has interacted with its atmosphere, and provides important clues to the gases it contains. If gases like oxygen, methane or ozone are detected, that could indicate the presence of living organisms. Such gases are known as biosignatures. A team of scientists from EPFL and Tor Vergata University of Rome has developed a statistical model that can help astronomers interpret the results of the search for these “signs of life.” Their research has just been published in Proceedings of the National Academy of Sciences (PNAS).

Since the first exoplanet—a planet that orbits a star other than the sun—was discovered 25 years ago, over 4,300 more have been identified. And the list is still growing: a new one is discovered every two or three days. Around 200 of the exoplanets found so far are telluric, meaning they consist mainly of rocks, like the Earth. While that’s not the only requirement for a planet to be able to host life—it also needs to have water and be a certain distance from its sun—it is one criterion that astronomers are using to focus their search.

In the coming years, the use of gas spectroscopy to detect biosignatures in ’ atmospheres will become an increasingly important element of astronomy. Many research programs are already under way in this area, such as for the CHEOPS exoplanet-hunting satellite, which went into orbit in December 2019, and the James-Webb optical telescope, scheduled to be launched in October 2021.

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