18/09/2025
बुध पर जाने से क्यों डरते हैं वैज्ञानिक? Why NASA don't sends mission to mercury?
Scientists have not sent humans to Mercury, and robotic missions are challenging, because of the planet's extreme heat, intense solar radiation, and the immense difficulty of reaching and orbiting it due to the sun's powerful gravity and Mercury's high orbital speed. The sun's gravity makes slowing down a spacecraft nearly impossible with current technology, requiring a complex series of gravity assists and long journey times, while Mercury's surface itself has scorching temperatures and no protective atmosphere, making it a very harsh environment for equipment.
Challenges of a Mercury Mission
Extreme Temperatures: Mercury's surface can reach 800°F (430°C) on the sunlit side and drop to -290°F (-180°C) on the night side, requiring probes to withstand vast temperature swings.
Intense Solar Radiation: Proximity to the sun exposes any spacecraft to high levels of solar radiation, which can damage sensitive electronics.
Difficulty Reaching Orbit: The planet is deep within the sun's gravity well, making it difficult and fuel-intensive to slow a spacecraft down enough to enter orbit.
No Atmosphere: Mercury has a thin exosphere, not a protective atmosphere, so it provides no shielding from the sun or impacts from meteoroids.
