Earth and Mars dance behind cosmic curtain every two years – Spacecrafts to go on auto-pilot


In the realm of interplanetary exploration, a biennial challenge known as solar conjunction is currently casting its cosmic veil over Mars, disrupting communication between Earth and the Red Planet. As the United States and China maintain a constant presence on Mars, the phenomenon presents a unique set of challenges that engineers and mission controllers must navigate.

What is solar conjunction?

Solar conjunction occurs every two years when Earth and Mars find themselves on opposite sides of the Sun, obscuring direct communication between the two planets. The upcoming blackout is scheduled from November 11 to November 25, 2023, during which Mars will be within 2 degrees of the Sun, rendering it temporarily invisible to spacecraft.

NASA’s Jet Propulsion Laboratory, responsible for overseeing the Mars missions, has been gearing up to face this celestial event. During solar conjunction, the Sun’s interference significantly limits radio transmissions from spacecraft, creating a communication blackout. To address this challenge, mission controllers have devised strategies to ensure the safety and functionality of the spacecraft during the blackout period.

All satellites and spacecrafts to go on auto-pilot during Solar Conjunction

One crucial aspect of managing this blackout involves the selective powering down of instruments on Mars spacecraft. Additionally, data collection and storage mechanisms are optimized to ensure that vital information is retained while minimizing potential data loss due to interference.

Perhaps the most intriguing strategy employed during solar conjunction is the foresight of mission teams in sending two weeks’ worth of instructions to Mars in advance. This precautionary measure, akin to preparing a child for a short vacation with detailed instructions, mitigates the risk of losing critical data during the communication blackout.

While the blackout may seem like a significant hurdle, advancements in autopilot technology have significantly enhanced the ability of spacecraft to operate independently. Engineers and scientists are leveraging these technological strides to ensure that Mars missions continue to gather valuable data even during the period of limited communication.

Also read: Why astronauts don’t use pencil in space?

Beyond NASA’s endeavors, other nations, including China and the UAE, also have spacecraft orbiting above the Martian surface. The collaborative effort to explore Mars is a testament to humanity’s collective curiosity about the mysteries of the cosmos, even in the face of periodic communication challenges.

As the blackout unfolds, scientists and engineers on Earth will be closely monitoring their spacecraft, anticipating the moment when Mars emerges from behind the Sun, and communication can resume. The temporary silence serves as a reminder of the unpredictable nature of space exploration, where innovative solutions are continually devised to overcome the challenges that lie in the vast expanse of our solar system.

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