Tag

Low Earth Orbit

All articles tagged with #low earth orbit

science2 days ago•14 min saved

Atomic Oxygen’s Subtle Attack: How the ISS Survives Through Coatings and Upkeep

In low Earth orbit, reactive atomic oxygen slowly erodes exposed spacecraft materials, especially carbon-based polymers and coatings. NASA’s MISSE experiments on the ISS provide real flight data to guide protective coatings, material choices, and maintenance practices. The station endures decades of exposure by thoughtful design, orientation, inspections, and replacements, a living example of how space weather shapes durability.

via Space Daily|

#atomic-oxygen #low-earth-orbit #materials-degradation

technology4 days ago•5 min saved

SpaceX lofts 29 Starlink satellites from Cape Canaveral

SpaceX launched a Falcon 9 rocket from Cape Canaveral Space Force Station on May 21, 2026, delivering 29 Starlink broadband satellites into low-Earth orbit.

via Florida Today|

#cape-canaveral #falcon-9 #low-earth-orbit

space14 days ago•5 min saved

Solar Activity Quickens Space Debris Decay in Low Earth Orbit

A 36-year study of 17 debris objects in low Earth orbit shows that when solar activity rises to a certain level, heating of the thermosphere expands the atmosphere and increases drag, causing debris to lose altitude faster. The researchers identify a transition threshold near two-thirds of solar maximum and note stronger extreme ultraviolet emissions around solar peaks, with practical implications for satellite operators who may need more frequent orbit corrections and greater fuel reserves during active solar phases.

via The Daily Galaxy|

#low-earth-orbit #orbital-decay #solar-activity

space-and-spaceflight18 days ago•16 min saved

A Crowded Sky: Artemis II Visualizes the LEO Traffic Jam

NASA's Artemis II composite animation visualizes a crowded low Earth orbit, showing thousands of objects— active satellites, dead satellites, rocket bodies and debris— streaking around Earth at about 17,550 mph and underscoring the collision risks as LEO traffic has surged in recent years.

via Gizmodo|

#artemis-ii #debris #low-earth-orbit

space18 days ago•5 min saved

Russia Demonstrates Ultra-Precise Satellite Rendezvous in Low Earth Orbit

Two Russian satellites COSMOS 2581 and 2583 performed an unprecedented 10-foot close approach in low Earth orbit on April 28, 2026, as part of a coordinated trio with COSMOS 2582 and a subsatellite Object F; tracked by COMSPOC and LeoLabs, the highly controlled rendezvous and proximity operations signal advanced space maneuvering with potential military or strategic implications and highlight growing space awareness capabilities.

via The Daily Galaxy|

#cosmos-satellites #low-earth-orbit #rendezvous-proximity-operations

science18 days ago•34 min saved

Russia's COSMOS sats perform a 3-metre orbital pass, sparking space-surveillance concerns

Two Russian military satellites, COSMOS 2581 and COSMOS 2583, came within about three metres of each other during a proximity manoeuvre in low Earth orbit (around 585 kilometres altitude), a complex pass tracked by COMSPOC and described as sophisticated. The event, linked to Russia’s inspector-satellite program, highlights risks from space debris and potential collisions in crowded orbits, with experts noting such precise, non-cooperative passes are impressive but not unprecedented and warning that debris could trigger cascading collisions (Kessler syndrome). Russia has not disclosed the satellites’ exact purpose; reports also mention a sub-satellite dubbed Object F.

via Yahoo|

#comspoc #cosmos-2581 #cosmos-2583

space24 days ago•10 min saved

China unveils 198-ton Tiangong expansion to six modules as ISS era ends

China plans a six‑module expansion of its Tiangong space station, boosting total mass to about 198 tons with a multifunctional extension to the Tianhe core, docking interfaces and upgraded propulsion/robotics. The move would widen international participation (Pakistan, Hong Kong, Macau) and position Tiangong as a global orbital laboratory as the ISS retires around 2030.

via Interesting Engineering|

#china-space-program #iss-retirement #low-earth-orbit

science26 days ago•5 min saved

LEO Collision Window Shrinks to 2.8 Days, Study Warns

A new arXiv study introduces the CRASH Clock to estimate how quickly a major satellite collision could occur if orbital tracking or maneuvering fails. Results show a serious collision could happen in about 2.8 days if maneuvering is lost (5.5 days when all tracked objects are included), a sharp tightening from 164 days in 2018 due to denser mega-constellations and debris. The risk is amplified by solar storms that disrupt tracking, communications, and maneuvering, potentially triggering a rapid cascade of debris in low Earth orbit.

via The Daily Galaxy|

#crash-clock #kessler-syndrome #low-earth-orbit

science27 days ago•4 min saved

Crowded Low-Earth Orbit Could Enter Debris Catastrophe in Days if Control Fails

New research introduces the CRASH Clock to estimate how quickly a serious, debris-generating collision could occur in crowded low-Earth orbit if satellites lose control; using June 2025 data, a loss of command for avoidance could trigger a catastrophic collision in about 2.8 days, with a broader version at 5.5 days and a far longer 164-day gap in 2018. The risk is heightened by megaconstellations such as Starlink, which perform thousands of maneuvers, and by solar storms that expand Earth's atmosphere and disrupt tracking, making collision assessments harder and potentially leading to rapid debris growth in a Carrington-scale event.

via SciTechDaily|

#crash-clock #low-earth-orbit #science

technology1 month ago•5 min saved

BlueBird 7 Ends Up in Too-Low Orbit; Insurance to Cover Loss as AST SpaceMobile Accelerates Satellite Rollout

AST SpaceMobile reports BlueBird 7 launched on the New Glenn but was placed into a lower-than-planned orbit, rendering its on-board thrusters unusable and requiring de-orbit. The company says the satellite’s cost will be recovered under its insurance. BlueBird 7 would have been its eighth LEO satellite; production continues with BlueBird 32 and BlueBird 8–10 expected to ship in about 30 days. AST SpaceMobile maintains plans for roughly monthly orbital launches in 2026 aiming for about 45 satellites by year-end as it builds a space-based cellular broadband network accessible by standard smartphones.

via Business Wire|

#ast-spacemobile #bluebird-7 #low-earth-orbit

technology1 month ago•3 min saved

Delta to Get Orbit-Powered Wi-Fi as Amazon Leo Expands Across 500 Planes in 2028

Amazon Leo will power Delta Air Lines’ in-flight Wi‑Fi starting in 2028, initially equipping 500 aircraft with high‑speed, low‑latency connectivity via a low‑Earth‑orbit satellite network and aviation‑grade phased‑array antennas offering up to 1 Gbps download and 400 Mbps upload. The service will be free for Delta SkyMiles members, and the multi‑year deal strengthens Delta’s AWS relationship by enabling Leo, AI, and other Amazon technologies to enhance the end-to-end travel experience across Delta’s global fleet.

via aboutamazon.com|

#amazon-leo #delta-air-lines #in-flight-wi-fi

technology1 month ago•14 min saved

Starlink Anomaly Sparks Debris Cloud in Low-Earth Orbit

Starlink-34343 suffered an in-orbit anomaly on March 29 at about 560 km altitude, losing communications. LeoLabs detected tens of debris fragments nearby and warned more could exist, though SpaceX and LeoLabs downplayed risk to the ISS and Artemis 2, noting the debris should deorbit within weeks due to the low altitude. SpaceX followed the event with a Falcon 9 Transporter-16 launch carrying 29 Starlink satellites roughly six hours later, while the company works to determine the root cause and implement corrective actions.

via SpaceNews|

#debris #leolabs #low-earth-orbit

space2 months ago•10 min saved

ISS Countdown: Can Private Space Stations Keep the U.S. in Orbit?

With the International Space Station aging and its retirement looming around 2030, the U.S. risks losing continuous human presence in low Earth orbit unless commercial space stations come online. NASA's plan hinges on late-2020s/early-2030s proposals and contracts, while a Senate bill seeks to extend ISS operations to 2032 to avoid a gap. Private firms like Vast and Axiom Space are racing to launch habitats (Haven-1, ISS-attached modules), but overall funding and NASA procurement delays complicate the timeline. China’s Tiangong and Russia’s potential withdrawal add geopolitical pressure. In the long run, LEO could become a thriving space economy and national security asset, but near-term leadership depends on timely NASA contracts (up to about $1.5B).

via CNN|

#commercial-space-stations #international-space-station #low-earth-orbit

science3 months ago•40 min saved

China’s Shenlong space plane kicks off its fourth orbital mission in secrecy

China’s Shenlong reusable space plane has kicked off its fourth orbital mission from Jiuquan, but the mission’s specifics remain secret; observers note Shenlong has previously conducted rendezvous and proximity operations with satellites and may deploy small payloads. Experts say these activities raise space-security questions, but the craft’s limited payload and power make it unlikely to be an immediate weapon, and they call for greater transparency from authorities.

via Yahoo|

#china #low-earth-orbit #rendezvous

space3 months ago•2 min saved

Solar Storms Could Trigger a Rapid Kessler-Style Debris Cascade in Low Earth Orbit

Scientists warn that a powerful solar storm could abruptly trigger a Kessler syndrome–style cascade in Earth's low orbit, turning orbital debris into a self-perpetuating cloud that endangers satellites and could shower debris back to Earth. Researchers introduced the CRASH clock, suggesting a catastrophic collision could unfold in roughly 5.5 days if navigation is disrupted, a sobering risk given the growing megaconstellations from SpaceX, Amazon, and others and the current high rate of in-orbit maneuvers.

via Futurism|

#crash-clock #kessler-syndrome #low-earth-orbit