aneurysm
发表于 2025-3-23 09:49:12
Visiting Venus...,rom Earth, the mission represented a partial success in that the ‘escape stage’ had set up a trajectory that took the probe within 100,000km of Venus that May, thereby demonstrating that interplanetary flybys were feasible. NASA’s Mariner 2 made a 35,000km flyby on 14 December 1962, during which a m
BOLT
发表于 2025-3-23 14:03:06
http://reply.papertrans.cn/88/8731/873077/873077_12.png
向下五度才偏
发表于 2025-3-23 20:53:18
Exploring the Ringed Planet,SI). At 5.7 tonnes, the two-part spacecraft is the largest, most sophisticated deep space probe to-date. It was launched on 15 October 1997 and flew an interplanetary cruise that used gravitational ‘slingshots’ with Venus, Earth and Jupiter order to reach Saturn. The highlights of the early part of
hardheaded
发表于 2025-3-23 23:26:47
Secrets of a Cloudy Moon . . .,anuary, the Huygens probe landed on the surface of the mysterious moon Titan. The landing of Huygens on Titan was a remarkable achievement. For comparison, let’s consider landing on Mars, whose distance from Earth is only 55m to 401m km, a planet explored by numerous spacecraft, starting with Marine
有权威
发表于 2025-3-24 02:23:24
Catching Fragments of Our Past..., those planets. But there is more to the Sun’s family than these main players. Orbiting between the planets are countless minor bodies — the rocky asteroids and icy comets. Planetary scientists gradually came to realize that a complete understanding of the formation and evolution of our planetary sy
驾驶
发表于 2025-3-24 09:13:53
Return to the Moon,e Soviet Union conducted its last lunar mission. Robotic lunar probes have been launched during the last one and a half decade by countries as diverse as the United States, Japan and the nations constituting the European Space Agency. These missions have provided new knowledge on our natural satelli
修剪过的树篱
发表于 2025-3-24 11:01:36
In the footsteps of Soyuz,rous modifications over that period, its basic design and capabilities have remained unchanged. Until early 2004 it looked as if the latest version, Soyuz TMA and its further modifications were going to serve the Russian space programme indefinitely. That picture changed when Russian Space Agency ch
密切关系
发表于 2025-3-24 15:07:17
Book 2007September. The annual will cover space exploration from a variety of angles: looking back at past missions, reviewing those currently under way and looking to those planned for the future. The ten invited contributions each year will cover a variety of topics within these areas, to appeal to a wide
crutch
发表于 2025-3-24 21:34:52
Arrival of the Red Planet,ectron reflectometer to seek magnetic fields. But contact with the spacecraft was lost on 22 August 1993, while it was in the process of pressurizing its propulsion system for the imminent orbit-insertion manoeuvre.
hankering
发表于 2025-3-25 01:52:19
http://reply.papertrans.cn/88/8731/873077/873077_20.png