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Brian Ross
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Bobby. wrote on Mar 6 th, 2023 at 7:34pm: Brian Ross wrote on Mar 6 th, 2023 at 7:19pm: Bobby. wrote on Mar 6 th, 2023 at 7:10pm: Brian Ross wrote on Mar 6 th, 2023 at 5:29pm: Bobby. wrote on Mar 6 th, 2023 at 3:38pm: Hi Brian, so you're saying that even though in 1970 the Russians put a space probe on Venus they still couldn't hit Australia with a nuke in 2023? Magnetic fields? They don't use a compass to guide an ICBM. tsk tsk https://coolcosmos.ipac.caltech.edu/ask/44-Has-a-spacecraft-ever-landed-on-Venus...On December 15, 1970 an unmanned Soviet spacecraft, Venera 7, became the first spacecraft to land on another planet. It measured the temperature of the atmosphere on Venus. In 1972, Venera 8 gathered atmospheric and surface data for 50 minutes after landing. Venus is approximately 12,104km in diameter. Australia is approximately 4000km, a quarter of that size. Venus is approximately 61 million kilometers from earth, Australia is approximately 9,977 km from Russia. A space probe launched from Russia would have to traverse a decreasing magnetic field to reach Venus and could be equipped with an active radar system to guide it. A missile launched from Russia would not be guided, except ballistically and would have to traverse a significantly decreasing and then a re-increasing magnetic field. No Russian missile has done that. Try again, Bobby. I find it interesting that you don't mention the numerous Soviet and Russian space missions that failed to reach Venus, Mars and the Moon of approximately same or earlier periods. I wonder why? Tsk, tsk, tsk... Brian, the magnetic field has nothing to do with it. tsk tsk tsk How do you know, Bobby? Tsk, tsk, tsk... Because magnetic fields are very weak and missiles use inertial guidance and computers to guide the missiles not a compass like a boy scout. tsk tsk tsk The missile must establish it's initial heading by compass, Bobby. It must at certain points in it's trajectory re-establish it's heading by compass. Inertial guidance is only good for 200-400 km from it's starting point. The US handles this via the GPS positioning system and satellite signal, which gives them world wide coverage. The Russians rely on magnet compass being more primitive. Their Global Positioning system is more limited and is designed to give assurances over the Northern Hemisphere alone. Tsk, tsk, tsk...
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