Tag

Detection

All articles tagged with #detection

science3 days ago•6 min saved

Near-Earth 2-meter asteroid slips by 428 km from Earth undetected, exposing defense blind spots

An ~2-meter asteroid named 2025 TF passed Antarctica at about 428 km altitude—too close to be safe and unseen until after it already flew by. The event underscores how detection of tiny near-Earth objects has surged (ATLAS and bigger datasets since 2000–07 vs 2017–26) but also reveals blind spots, as larger 200-meter rock 2025 FA22 was only spotted six months before a close approach. Rubin Observatory and NASA’s space-based NEO Surveyor (targeted for 2027) aim to close these gaps, improving lead times for potential deflections in the future.

via Boing Boing|

#asteroid #detection #near-earth-object

science1 month ago•2 min saved

Largest Digital Camera Detects Fastest-Spinning Massive Asteroid

The world's largest camera has detected the fastest-spinning asteroid with a diameter of over 0.3 miles, highlighting advancements in space observation technology.

via Interesting Engineering|

#asteroid #astronomy #camera

science5 months ago•5 min saved

Innovative detection methods enhance identification of microplastics and nanoplastics

Researchers have developed a low-cost, portable optical sieve using a semiconductor material with tiny cavities that can detect and size nanoplastics as small as 200 nanometres in environmental samples, facilitating easier monitoring of plastic pollution and potential health impacts.

via The Conversation|

#detection #environmental-pollution #microplastics

science1 year ago•2 min saved

Asteroid's Fiery Display Over Russia Captured Hours After Detection

A small asteroid, temporarily named C0WEPC5, burned up in Earth's atmosphere over Siberia, creating a spectacular fireball. Detected just hours before impact by NASA's ATLAS and ESA's alert system, the event caused no damage. This marks the fourth imminent impactor detected this year, highlighting advancements in asteroid detection and tracking, crucial for identifying potential threats to Earth.

via Livescience.com|

#asteroid #detection #esa

science1 year ago•1 min saved

Third Asteroid in 2024 Hits Earth Hours After Detection

An asteroid was detected just two hours before it exploded over the Pacific Ocean, highlighting gaps in current detection systems. This marks the third 'imminent impactor' this year that was identified only hours before collision. The Asteroid Terrestrial-impact Last Alert System (ATLAS) in Hawaii, which scans for such threats, missed the asteroid due to its position near the edge of two viewing fields. Although the asteroid caused no harm, it underscores the need for improved detection and tracking capabilities to prevent potential future impacts over populated areas.

via TweakTown|

#asteroid #atlas #detection

science1 year ago•1 min saved

Surprise Asteroid Impact Marks 2024's Third Close Call

A small asteroid, 2024 UQ, struck Earth's atmosphere just hours after being detected, highlighting gaps in current impact monitoring systems. The 3-foot-wide asteroid was discovered by the Asteroid Terrestrial-impact Last Alert System in Hawaii only two hours before it disintegrated over the Pacific Ocean. This incident marks the third 'imminent impactor' of 2024, underscoring the need for improved early detection technologies to prevent potentially dangerous space rocks from going unnoticed.

via NDTV|

#asteroid #detection #earth

science1 year ago•3 min saved

Third 'Imminent Impactor' Asteroid Hits Earth in 2024

An asteroid, 2024 UQ, impacted Earth's atmosphere just hours after being detected by the ATLAS survey in Hawaii, highlighting challenges in impact monitoring systems. The 3-foot-wide asteroid burned up over the Pacific Ocean, posing no threat. It was the third 'imminent impactor' of 2024, following similar events in Germany and the Philippines. Efforts to improve asteroid detection and deflection, such as NASA's DART mission and China's upcoming project, are ongoing to enhance planetary defense.

via Space.com|

#asteroid #detection #esa

technology1 year ago•5 min saved

"Spotting Deepfakes: The Eyes Have It"

Researchers at the University of Hull have discovered that deepfakes can be identified by analyzing the reflections in a person's eyes, using methods similar to those employed in astronomy. Consistent reflections in both eyes indicate a real person, while inconsistencies suggest an AI-generated image. This technique, though not foolproof, offers a new approach in the ongoing effort to detect deepfakes.

via The Royal Astronomical Society|

#ai #astronomy #deepfake

health1 year ago•0 min saved

"Rethinking Prostate Cancer Screening: Balancing Benefits and Risks"

A study has revealed that PSA tests for prostate cancer may fail to detect some aggressive forms of the disease, leading to potential misdiagnosis and delayed treatment. Researchers found that the commonly used PSA test missed over 15% of aggressive prostate cancers, particularly in men with high PSA levels. This highlights the limitations of the test and the need for improved methods to accurately detect and diagnose aggressive prostate cancer.

via Financial Times|

#aggressive-forms #detection #health

astronomy2 years ago•8 min saved

"Breakthrough: Ultra-Fast Radio Bursts Detected from FRB 20121102A"

The Fast Radio Burst (FRB) source FRB 20121102A has been detected again with significantly smaller dispersion measure (DM) by the Five-hundred-meter Aperture Spherical radio Telescope (FAST). This periodic activity from FRB 20121102A provides valuable insights into the nature and behavior of repeating FRBs, shedding light on their emission mechanisms and the extreme environments they originate from. The detection highlights the importance of continued monitoring and study of FRBs to unravel the mysteries surrounding these cosmic phenomena.

via Nature.com|

#astronomy #detection #fast-radio-bursts

health2 years ago•2 min saved

IISc's Breakthrough: Hybrid Nanoparticles Revolutionize Cancer Cell Targeting

Scientists at the Indian Institute of Science have developed hybrid nanoparticles made of gold and copper sulfide that can potentially detect and kill cancer cells. These nanoparticles have photothermal and photoacoustic properties, allowing them to generate heat and ultrasound waves when exposed to light. The heat and singlet oxygen atoms produced by the nanoparticles can kill cancer cells, while the ultrasound waves can be used to detect cancer cells with high contrast. The small size of the nanoparticles enables them to travel inside tissues easily and potentially leave the body naturally. Further studies are needed to determine their safety for use in humans.

via Phys.org|

#cancer-cells #detection #health

health2 years ago•1 min saved

"Rare and Aggressive Skin Cancer Strikes Jimmy Buffett, Linked to Merkel"

Merkel cell carcinoma, a rare and aggressive form of skin cancer, is often harder to detect than melanoma and can spread quickly to the lymph nodes. Unlike other types of skin cancer, there are no reliable markers or indicators for Merkel cell carcinoma. It typically appears as a small reddish or purple bump under the skin and is usually diagnosed through a biopsy. It tends to affect older individuals with sun exposure or weakened immune systems. Treatments for melanoma have shown effectiveness against Merkel cell carcinoma, but the cancer can reappear even after seemingly successful treatment. Early detection and prompt medical attention are crucial in managing this lesser-known form of skin cancer.

via The Atlanta Journal Constitution|

#aggressive-cancer #detection #health

health2 years ago•1 min saved

"Rare and Aggressive Skin Cancer Strikes Jimmy Buffett, Linked to Merkel"

via The Atlanta Journal Constitution|

#aggressive-cancer #detection #health

mobile-security-malware2 years ago•1 min saved

Android Malware Apps Evade Detection with Stealthy APK Compression

Threat actors are using Android Package (APK) files with unsupported compression methods to evade malware analysis. Over 3,300 artifacts have been found using this technique, with 71 samples able to be loaded onto the operating system without issues. These apps were likely distributed through untrusted app stores or social engineering tactics. The use of unsupported compression methods limits decompilation and analysis, making it difficult to detect and analyze the malware. Additionally, malware authors are deliberately corrupting APK files to trigger crashes on analysis tools. This discovery follows Google's recent revelation about threat actors using versioning to bypass malware detection on the Play Store.

via The Hacker News|

#android #apk #compression

science2 years ago•0 min saved

"UK Scientists Launch Desperate Hunt for Dark Matter Source in Yorkshire"

British quantum physicists warn that time is running out to uncover the secrets of dark matter, as weakly interacting massive particles (Wimps) remain elusive. Dark matter, which makes up 85% of the universe's mass, does not interact with electromagnetic forces, making it difficult to detect. Scientists have inferred its existence through gravitational observations but are uncertain about its composition. Wimps are currently the leading hypothesis for dark matter.

via Interesting Engineering|

#dark-matter #detection #particle-physics