可重复使用航天器是指可以重复使用、能够迅速穿越大气层、自由往返于地球表面与太空之间、运送乘员和有效载荷的航天器，也可以指较长时间在轨停留和机动、完成各种任务的航天器，包括载人飞船、货运飞船、推进飞行器、行星着陆器、航天飞机等。

The crew of the US Polaris Dawn mission returned to Earth early Sunday, completing the commercial human spaceflight mission.

《天命之子》是一款包含RPG要素的回合制卡牌游戏，由Next Floor和Shiftuo联合出品。游戏以魔王候补为主题，玩家扮演一位冥界的后裔，为了生存于人类世界而假扮高中生，并通过打工赚取生活费。游戏采用基本游玩免费+内购道具的收费方式。

As the Paris Paralympics came to an end, Team China has amassed 220 medals, decisively leading the medal table by Sunday ...

SpaceX launched a new fully commercial human spaceflight mission on Tuesday, featuring the first-ever commercial spacewalk.

NEW YORK, Sept. 6 (Xinhua) -- Boeing's Starliner spacecraft departed the International Space Station (ISS) on Friday to begin its journey back to Earth with no astronaut onboard. The uncrewed ...

NASA提供的照片显示，波音“星际客机”开始接近新墨西哥州白沙太空港的着陆点。（图：法新社）（圣达菲7日综合电）美国波音“星际客机”（Starliner）6月5日将两名太空人载上国际太空站，却因安全问题而无法将人送回来，如今它于美东时间6日下午6时4 ...

探索游戏新潮流！最新塔防单机游戏大揭秘，十款创新力作震撼来袭。体验策略与挑战的完美结合，无论是经典重温还是创新设计，这里有你不可错过的前沿之作。沉浸式防御战术等你来征服，一睹为快，领略塔防世界的新篇章！ 《宝可梦TCG Live》是一款全新的宝可梦卡牌在线游戏，旨在提供更好的游戏体验。该游戏将取代之前的《宝可梦TCG Online》，并将在iOS、安卓、PC和Mac平台上推出。玩家可以在新作中继续 ...

NASA ultimately decided that sending the two astronauts home on Starliner was too risky. The new plan is to have the two astronauts ride home on a SpaceX Dragon spacecraft in February 2025, and have ...

文章《How Philanthropy Fails Boys and Men/慈善事业如何辜负了男孩和男性》发布在慈善纪事报上。作者Eden ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...