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All articles tagged with #radar

Mercury’s permanently shadowed polar floors cradle water ice, revealed by MESSENGER data
sciencespace2 hours ago

Mercury’s permanently shadowed polar floors cradle water ice, revealed by MESSENGER data

Mercury’s cold polar crater floors hold water ice on permanently shadowed terrain, a conclusion supported by MESSENGER (2012) via radar-bright deposits, a hydrogen signal from neutron measurements, exposed versus buried ice seen in laser altimetry, and thermal models. Ice can be exposed in some areas and buried under a thin, dark cover in others; deposits may range from metres to tens of metres thick, and their age and origin remain topics of study, with delivery likely from comets/asteroids over hundreds of millions of years. The upcoming BepiColombo mission will map these regions in greater detail but will not land in the cold traps.

via Space Daily|
#mercury#messenger#polar-craters
Titan’s equatorial dunes: 100–150 m tall and likely ice grains cloaked in organics
space6 days ago

Titan’s equatorial dunes: 100–150 m tall and likely ice grains cloaked in organics

Cassini radar mapped long, near-parallel dunes across Titan’s equator, with individual ridges about 1–2 km wide and 100–150 m high, spanning hundreds of kilometres and occupying a notable fraction of the equatorial surface. The dune grains are plausibly water ice coated with hydrocarbons that settled from Titan’s orange atmosphere, though some analyses favor mostly organic grains; no spacecraft has sampled them yet. Dragonfly, launching no earlier than 2028 and arriving around 2034, will study dune material up close to help resolve the composition debate. The work also highlights an active sediment cycle driven by atmospheric chemistry and episodic methane storms that transport and shape the dunes over long timescales.

via Space Daily|
#cassini#composition#dunes
Radar Palette Maps Crop Growth Across South Africa’s Maize Triangle
science1 month ago

Radar Palette Maps Crop Growth Across South Africa’s Maize Triangle

NASA’s Earth Observatory uses a NISAR radar-derived false-color composite from 10 passes during the 2025–2026 growing season to visualize crop types and changes in South Africa’s Maize Triangle. Green marks vegetation, red shows unvegetated surfaces, and blue indicates how rapidly vegetation changed, offering a compact, per-pixel view of irrigation effects and land-use shifts over a large agricultural area.

via NASA Science (.gov)|
#agriculture#maize#nisar
Subsurface Ice Detected in Permanently Shadowed Lunar Craters Spurs Moon-Base Prospects
space1 month ago

Subsurface Ice Detected in Permanently Shadowed Lunar Craters Spurs Moon-Base Prospects

ISRO’s Chandrayaan-2 radar data reveal signatures consistent with buried subsurface ice beneath the floors of four doubly-shadowed craters in the Moon’s south polar region, including a 1.1‑km Faustini inner crater with a lobate rim that hints at an ice-rich impact. The ice lies in permanently dark, ultra-cold craters, preserved for billions of years, and could provide water and fuel for future human missions, making these regions highly strategic for lunar exploration and resource utilization.

via The Times of India|
#chandrayaan-2#ice#moon
Near-Earth Rock Slips Through Detection Door Before Close Flyby
science2 months ago

Near-Earth Rock Slips Through Detection Door Before Close Flyby

An asteroid the size of a blue whale will pass about 56,500 miles from Earth tonight (roughly 24% of the Earth–Moon distance), but it wasn’t discovered until roughly a week ago because key radar facilities are down after Arecibo’s collapse and ongoing Goldstone repairs; only about 1% of Earth-skimming asteroids this size get flagged, even as surveys like Vera Rubin Observatory discover thousands of new objects, highlighting gaps in our planetary defense.

via Nautilus | Science|
#asteroid#near-earth-object#radar
Radar crosses unicorn threshold with $170M Series B for RFID-driven retail inventory
business2 months ago

Radar crosses unicorn threshold with $170M Series B for RFID-driven retail inventory

Radar, a RFID-based retail inventory startup backed by Jay Schottenstein, raised $170 million in a Series B led by Gideon Strategic Partners and Nimble Partners, valuing the company above $1 billion and expanding its deployments with retailers like American Eagle and Old Navy. The platform provides real-time in-store inventory visibility to reduce shrink and improve product availability, with reported gains in stock accuracy and lower order cancellation rates for buy-online-pickup-in-store.

via CNBC|
#business#inventory-management#radar
NASA's NISAR Radar Tracks Century-Old Sinking in Mexico City
science2 months ago

NASA's NISAR Radar Tracks Century-Old Sinking in Mexico City

NASA’s new NISAR radar satellite has mapped ongoing subsidence in Mexico City, with some zones sinking more than 2 cm per month as the city sits on a drained lakebed. The readings from Oct 2025 to Jan 2026 demonstrate NISAR’s ability to measure ground deformation in dense, cloudy environments and are openly available, highlighting continued urban infrastructure risks and offering a global tool for monitoring subsidence.

via The Daily Galaxy|
#mexico-city#nasa#nisar
Iranian missiles test NATO radar defenses in Turkey, focusing on Malatya
defense-and-security4 months ago

Iranian missiles test NATO radar defenses in Turkey, focusing on Malatya

Iranian missiles heading toward Turkey were intercepted by NATO air defenses near Hatay and by US destroyers near Incirlik, with analysts suggesting the strikes were meant to test NATO’s air-defense network and potentially assess the Kurecik TPY-2 radar in Malatya; NATO deployed new Patriot batteries to Malatya, highlighting the EPAA and ‘engage on remote’ concept.

via Middle East Eye|
#defense-and-security#iran#missiles
Hidden Lava Tubes Hint at a Subsurface Network Beneath Venus
space-and-spaceflight5 months ago

Hidden Lava Tubes Hint at a Subsurface Network Beneath Venus

Researchers analyzing radar data from the Magellan mission detected what appears to be a large underground lava tube beneath Venus, near the Nux Mons region. The tube is about 1 kilometer wide, with a roof around 150 meters thick and a hollow cavity at least 375 meters high, marking the first confirmed subsurface feature on Venus and supporting long-held ideas about the planet’s volcanic activity. If confirmed, there may be more tubes beneath Venus’ surface, a task for upcoming radar-focused missions VERITAS and EnVision, planned to launch around 2031.

via Gizmodo|
#lava-tube#radar#space-and-spaceflight
Venus Unveils Its Largest Known Lava Tube
science5 months ago

Venus Unveils Its Largest Known Lava Tube

A Nature Communications study using NASA’s Magellan radar data finds a giant subsurface lava tube beneath Venus’ Nyx Mons, about 1 kilometer in diameter and potentially extending at least 45 kilometers, providing the strongest direct evidence yet of Venusian lava tubes; confirming the full extent will require higher-resolution radar data.

via Futurism|
#lava-tubes#magellan#nyx-mons