우주 과학

Satellites Powered by Water? The Revolutionary Propellant Changing Spaceflight
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물로 움직이는 위성? 우주비행을 혁신하는 획기적 추진제

위성의 물 추진은 증기 추진(레지스토젯), 연소를 위한 수소와 산소로의 전기분해, 또는 고 ISP 추진을 위한 물-플라즈마/이온 스러스터를 사용할 수 있습니다. Momentus Space의 Vigoride는 마이크로파 전기열 스러스터(MET)를 사용하여 태양광으로 물을 마이크로파로 가열해 플라즈마로 끓인 뒤, 이를 고에너지 제트로 분사합니다. 2023년 1월, Momentus의 Vigoride-5는
9월 7, 2025

Technology News

  • First-time Tesla owner reveals the biggest surprise after a year: maintenance savings win
    December 12, 2025, 9:16 PM EST. A Tesla owner shares how switching to an electric vehicle can slash more than just fuel costs. Allen Tran posted a TikTok showing his first-year savings, with monthly fuel expenses dropping by about $30. The real kicker? Maintenance costs. He notes his previous luxury car racked up tens of thousands in repairs, while his Tesla needed only two rear tires (~$600) in a year. As he drives more, the savings grow, since EVs have far fewer moving parts. A study cited by TCD suggests driving electric can cut gas and maintenance costs up to $8,000. Beyond the car, home charging and optional solar setups can further shrink energy bills, aided by tools like Qmerit, EnergySage, and Solar Explorer.