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Solar Cruiser Disturbance Torque Estimation and Predictive Momentum Management
arXiv:2601.00532v3 Announce Type: replace Abstract: This paper presents a novel disturbance-torque-estimation-augmented model predictive control (MPC) framework to perform momentum management on NASA's Solar Cruiser solar sail mission. Solar Cruiser represents a critical step in the advancement of large-scale solar sail technology and includes the innovative use of an active mass translator (AMT) and reflectivity control devices (RCDs) as momentum management actuators. The coupled nature of...
Atmospheric Methane Removal as a Third Climate Intervention: Termination Risks and Air Pollutant Effects
Physics > Atmospheric and Oceanic Physics [Submitted on 24 Jan 2026 (v1), last revised 29 May 2026 (this version, v3)] Title:Atmospheric Methane Removal as a Third Climate Intervention: Termination Risks and Air Pollutant Effects View PDFAbstract:Atmospheric Methane Removal (AMR) is a third class of climate intervention, along with Carbon Dioxide Removal (CDR) and Solar Radiation Management (SRM). We show that, unlike CDR, the avoided warming by AMR is not durable due to methane's short...
Ahead of SpaceX IPO, Musk says AI satellites will use mostly existing technology
Ahead of SpaceX IPO, Musk says AI satellites will use mostly existing technology June 8 : SpaceX CEO Elon Musk said on Monday that building orbital AI data centers is not a difficult engineering challenge as the company prepares for its blockbuster IPO this week. The billionaire said that much of the required technology already exists in its current Starlink satellite network. "Part of what we want to convey here is that there is not some magic that is necessary, that doesn't exist," Elon...
Space-CIM: Enabling Compute-In-Memory Accelerators for Thermally-Constrained Space Platforms
Announce Type: new Abstract: The rapid growth in compute demand from artificial intelligence (AI) has driven a massive surge in data center construction, precipitating an energy and sustainability crisis. Motivated by the abundant solar energy in outer space and the recent sharp reduction in space launch costs, orbital data centers are emerging as a potential pathway for the future scaling of AI compute infrastructure. While the cold background in vacuum seems appealing for cooling,...
Is extracting oxygen from lunar soil the future of space exploration?
Is extracting oxygen from lunar soil the future of space exploration? Lisa Lock Scientific Editor Andrew Zinin Lead Editor A new race to the moon is emerging between the United States and China.
A Disordered Photonic Medium Enabling Ultrabroadband Light Scattering and Selective Longwave Infrared Emission
arXiv:2603.02513v2 Announce Type: replace Abstract: A surface that selectively emits heat in the long-wave infrared (LWIR) can enable passive cooling in hot environments while retaining partial radiative insulation in cold conditions. However, its cost-effectiveness, practical deployment, and fundamentally, the optical design, remain limited by the reliance on metal reflectors. To overcome this limitation, here we use an absorption-scattering competition factor to establish design guidelines...
New method turns ocean water into drinking water, without waste
The energy-efficient desalination system produces fresh water without chemical additives and transforms leftover salts into useful materials. Big takeaways A new desalination method produces drinking water from seawater without chemical additives. The solar-powered system uses specially engineered black metal to absorb sunlight.
More Singapore developers embrace greener buildings as energy costs rise
More Singapore developers embrace greener buildings as energy costs rise From low-carbon building materials to district-wide cooling systems, developers are adopting new technologies and design strategies to reduce energy consumption and operating costs. SINGAPORE: More developers in Singapore are going beyond minimum sustainability requirements as rising energy costs strengthen the business case for greener buildings. Architects say private developers are increasingly pursuing higher...
Desi jugaads during heatwaves: India’s battle against 45°C temperatures
India is learning to live with a hotter future. From Delhi to Mumbai, temperatures are regularly crossing 45 degrees Celsius, heatwaves are lasting longer and cities are becoming giant heat traps due to rapid urbanisation and the growing urban heat island effect. But if there is one thing Indians are famous for, it is finding a jugaad for every problem.
Can solar sails really send humans out into interstellar space?
Can solar sails really send humans out into interstellar space? "I think these are not far-out type of ideas; they are not really futuristic ideas that we are talking about." If humankind ever travels to distant stars, we might sail there — and it might be sooner than you think.