Hurricane forecasters rely on weather data collected and processed by Department of Defense satellites. That data will no longer be available as of Monday, June 30.
Category: satellites – Page 4
Supernova remnant SNR J0450.4−7050 investigated in detail
An international team of astronomers has employed various satellites and ground-based telescopes to perform multiwavelength observations of a supernova remnant known as SNR J0450.4−7050. Results of the observational campaign, published June 18 on the pre-print server arXiv, yield new insights into the properties of this remnant, finding that it is much larger than previously thought.
Supernova remnants (SNRs) are diffuse, expanding structures resulting from a supernova explosion, which usually last several hundred thousand years before dispersing into the interstellar medium (ISM). Observations show that SNRs contain ejected material expanding from the explosion and other interstellar material that has been swept up by the passage of the shockwave from the exploded star.
Studies of SNRs beyond the Milky Way are crucial for understanding their feedback in different evolutionary phases and gaining insights into their local ISM. The Large Magellanic Cloud (LMC) is one of the galaxies that has its SNR population explored in detail.
2032 ‘City-Killer’ Impact Threatens Earth’s Satellites, Study Finds
If a huge asteroid smashes into the Moon in 2032, the gigantic explosion would send debris streaming towards Earth that would threaten satellites and create a spectacular meteor shower, according to researchers.
Earlier this year there were briefly fears that the 60-metre-wide (200-foot-wide) asteroid called 2024 YR4, which is big enough to level a city, would strike Earth on December 22, 2032.
It was given the highest chance – 3.1 percent – of hitting our home planet that scientists have ever measured for such a giant space rock.
Biomass satellite returns striking first images of forests and more
Today, at the Living Planet Symposium, ESA revealed the first stunning images from its Biomass satellite mission—marking a major leap forward in our ability to understand how Earth’s forests are changing and exactly how they contribute to the global carbon cycle. But these inaugural glimpses go beyond forests. Remarkably, the satellite is already showing potential to unlock new insights into some of Earth’s most extreme environments.
Hurricanes stir deep ocean layers, bringing nutrients and low-oxygen zones to surface, study finds
With careful planning and a little luck, researchers found a surprising upside to hurricanes after a Category 4 storm disrupted their expedition off the coast of Mexico.
The team was able to sample the ocean right after the storm passed and found that the storms churn the ocean so powerfully and deeply—up to thousands of meters—that nutrient-rich, cold water is brought to the surface.
The resulting phytoplankton blooms—visible in satellite imagery taken from space—are a feast for bacteria, zooplankton, small fish, and filter-feeding animals such as shellfish and baleen whales.
Space Force orders two more GPS IIIF satellites for $509.7 million
WASHINGTON — The U.S. Space Force has ordered two additional Global Positioning System satellites from Lockheed Martin. The $509.7 million contract covers GPS III satellites 21 and 22, which are part of the advanced GPS III Follow-on constellation designed to provide enhanced positioning, navigation and timing services to both civilian and military users worldwide.
Delivery of the two satellites is scheduled by 2031, according to a contract announcement May 28.
The order was placed under an existing 2018 contract that allows for up to 22 spacecraft. With this procurement, the Space Force has now exercised options for 12 satellites, bringing the total value of the contract to $4.1 billion.
Mapping tumor microenvironments to predict lung cancer immunotherapy response
Amidst the continued struggle to treat non-small-cell lung cancer, a new study led by Stanford University scientists suggests that a patient’s response to immunotherapy may hinge on how immune cells cluster around tumors. Their results reveal that spatial arrangements of certain immune cells within tumors can serve as powerful predictors of treatment response, surpassing existing biomarker tests.
Lung cancer leads global cancer mortality, and non-small-cell variants make up more than 80% of cases. Immune checkpoint inhibitors have transformed therapy yet help only 27–45% of recipients.
Reliable predictive biomarkers for immunotherapy response have eluded clinicians, who currently rely on PD-L1 immunohistochemistry, tumor mutational burden, and microsatellite stability tests, each offering modest predictive performance across trials and are prone to inconsistency.
Chinese commercial company lands contract to build provincial satellite constellation
HELSINKI — Chinese commercial satellite manufacturer MinoSpace has won a major contract to build a remote sensing satellite constellation for Sichuan Province, under a project approved by the country’s top economic planner.
Beijing-based MinoSpace won the bid for the construction of a “space satellite constellation,” the National Public Resources Trading Platform (Sichuan Province) announced May 18, Chinese language Economic Observer reported.
The contract is worth 804 million yuan (around $111 million) and the constellation has been approved by the National Development and Reform Commission (NDRC), China’s top economic planning agency, signaling potential alignment with national satellite internet and remote sensing infrastructure goals.
China starts building first giant supercomputer network in space
China has begun launching satellites for a giant computer network in space, according to the China Aerospace Science and Technology Corporation.
Newsweek contacted the company and the United States Space Force for comment.
Why It Matters
Space is an increasing frontier for competition between China and the United States. Putting a computer network in space marks a step change from using satellites for sensing and communications, but leaving them dependent on their connections to Earth for data processing.