if (arr[i-1] arr[i]) return 0;
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2026-02-28 00:00:00:0本报记者 吴月辉 出台相关政策措施2200余项，在优化国家发展战略布局等方面取得新成效。关于这个话题，服务器推荐提供了深入分析
Increasing the Artemis launch cadenceA major change is the decision to treat Artemis III as a practice mission in Earth orbit rather than a landing attempt. That mission will let astronauts and engineers test how the Orion spaceship and the landers find each other, fly together, and possibly dock. It will also allow crews to start checking life‑support systems and other hardware inside the landers before sending them all the way to the lunar surface. Officials said they may even try limited tests of the new moonwalking suits in weightlessness, if schedules allow.
There is a plan to prevent such a strike—the Space Surveillance Network, a bevy of sensors that the military uses to track space debris. NASA monitors what’s unofficially known as the “pizza box,” a sort of no-fly zone around the ISS. When pieces of debris are predicted to enter the box—if there’s at least a 1 in 100,000 chance of collision—mission controllers order avoidance maneuvers, firing thrusters that move the ISS and dodge the trash. The technique has been used dozens of times since the first ISS module launched in 1998. But the system only tracks about 45,000 larger pieces, and all sensors have noise. Plus, risk thresholds can miss stuff, sometimes badly. In 2025, Chinese astronauts were briefly stranded at their station after debris hit their return vehicle.