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Google has announced Project Suncatcher, an initiative to place machine learning infrastructure in space, exploring whether solar-powered satellites could host large-scale AI compute. The company published details through Google Research, outlining early testing plans including prototype satellite launches. The announcement has drawn significant attention among technology commentators debating the feasibility, cost, and environmental implications of moving data centers into orbit.

Researchers bombarded water with light roughly 10 billion times brighter than natural sunlight, expecting faster evaporation, but the water failed to evaporate any more quickly. The surprising result challenges assumptions about how light drives evaporation and could reshape understanding of processes relevant to climate science, desalination and industrial drying technologies.

Australia's Deputy Prime Minister Richard Marles is defending his response to an artificial intelligence-related breach, amid reports that he met OpenAI chief executive Sam Altman. News outlets including the Herald Sun and Cairns Post are covering the story, raising questions about how the government is handling AI security and its engagement with major tech executives.

Russia has restored its Perimeter system, a semi-automated mechanism designed to launch a retaliatory nuclear strike if Russian leadership is wiped out, according to The Sunday Times. The Cold War-era system, sometimes called 'Dead Hand', is intended to guarantee retaliation even if command structures are destroyed. Confirmation is difficult given the system's secrecy, and Moscow has not officially commented on the report.

South Korea's government under President Lee is restructuring its support for small and medium-sized enterprises, directing more funding toward technology development and startups while cutting back on loan programmes and job-related subsidies. The reorientation signals a policy preference for innovation-driven growth over traditional employment and financing support, and is drawing attention as businesses assess how the changes will affect their access to public assistance.

Fixed mortgage rates moved higher again as of Sunday, September 27, 2026, continuing an upward trend compared with the previous week. The update also covers refinance rates, giving borrowers a snapshot of current borrowing costs. Homeowners weighing a refinance and buyers planning a purchase are watching whether the climb continues or eases in the coming weeks.

This trending item is a blog post explaining a common misconception: the UV index measures the strength of ultraviolet radiation that causes sunburn and skin damage, not the warmth you feel from sunlight. That warm sensation comes mostly from infrared radiation, which is separate from UV. Readers on Hacker News appear to be sharing and discussing the post, apparently finding it a useful correction of a widespread misunderstanding about what the index actually tracks.