揭曉前往金星的歷程和時程
Traveling to Venus entails considering the varying distance between Earth (closest: 41 million km; farthest: 261 million km) and spacecraft speed. Chemical propulsion takes around 150 days, while advanced systems like ion propulsion could reduce it to 30-60 days. Future missions must account for duration, payload, radiation, gravity, and other factors to ensure successful and…