【天问二号5月29日发射】5月26日讯，今天，记者从国家航天局了解到：经工程任务指挥部综合研判决策，行星探测工程天问二号任务计划5月29日实施发射。目前，在西昌卫星发射中心，任务各项准备工作正在稳步推进，执行此次发射的长征三号乙遥一一〇运载火箭即将加注推进剂。天问二号任务计划通过一次发射完成多项探测任务，包括对小行星2016HO3进行伴飞、取样并返回地球，以及对主带彗星311P开展伴飞探测。

Core Viewpoint - The Tianwen-2 mission is scheduled for launch on May 29, aiming to conduct multiple exploration tasks including flybys and sample collection from asteroid 2016HO3 and comet 311P [1] Group 1 - The Tianwen-2 mission is part of China's planetary exploration program, showcasing advancements in space technology and exploration capabilities [1] - The launch will utilize the Long March 3B Yao-110 carrier rocket, which is currently undergoing propellant loading at the Xichang Satellite Launch Center [1] - The mission's objectives include not only the flyby of asteroid 2016HO3 but also the collection and return of samples to Earth, highlighting the mission's scientific significance [1]