【正文】
ve never had a tragedy like this. and perhaps we39。此資料由網(wǎng)絡(luò)收集而來(lái),如有侵權(quán)請(qǐng)告知上傳者立即刪除。ve never lost an astronaut in flight. we39。s hard to understand, but sometimes painful things like this happen. it39。t belong to the fainthearted。 our hopes and our journeys continue.