India's Aditya-L1 Mission Unveils Crucial Insights into Solar Activity

Fri Mar 14 2025 16:55:25 GMT+0200 (Eastern European Standard Time)
India's Aditya-L1 Mission Unveils Crucial Insights into Solar Activity

India's first solar observation mission, Aditya-L1, has made significant strides in understanding solar phenomena that can impact Earth and its technology.


The Indian Institute of Astrophysics has reported that the mission's Visible Emission Line Coronagraph captured vital data on a coronal mass ejection, underscoring the mission's importance in predicting solar storms and their effects on our planet.



Scientists in India have announced a groundbreaking achievement from Aditya-L1, the country’s inaugural solar observation mission launched into space. Notably, on July 16, one of the mission's primary instruments, the Visible Emission Line Coronagraph (Velc), provided data that allowed researchers to accurately estimate when a coronal mass ejection (CME) initiated. CMEs are enormous plasma explosions that occur in the Sun's corona and can have significant implications for Earth’s weather as well as the operational integrity of satellites.

According to Prof R. Ramesh, who leads Velc at the Indian Institute of Astrophysics, a CME can consist of energy particles weighing up to a trillion kilograms, traveling at speeds nearing 3,000 km (about 1,864 miles) per second. He explained that if directed toward Earth, a CME could traverse the 150 million km distance in roughly 15 hours.

The CME that Velc tracked on July 16 originated on the side of the Sun facing Earth at precisely 13:08 GMT and was noted to alter its trajectory shortly after, veering away from the planet and ultimately not affecting its weather systems. This is a critical aspect of sun observation, as solar storms routinely affect both terrestrial and space weather, impacting nearly 7,800 satellites orbiting Earth—including over 50 from India.

While CMEs pose a minimal direct danger to human health, they can severely disrupt technological systems, such as causing power grid failures and interference with satellite operations, leading to communication breakdowns. In fact, Prof Ramesh underscored the dependency modern life has on communication satellites, pointing out potential chaos from a CME-related communication blackout.

Historically, CMEs have led to major disruptions. For instance, the infamous Carrington Event of 1859 compromised telegraph networks worldwide, while a 1989 incident knocked out Quebec's power grid for hours, affecting millions. If scientists can observe solar activities in real time, using devices like those aboard Aditya-L1, they might foresee solar storms and mitigate their impacts by proactively shutting down affected systems.

In contrast to existing U.S. and European solar missions that typically view the Sun through single opportunities, Aditya-L1 maintains a continuous watch on solar behavior regardless of eclipses or other disruptions. Prof Ramesh elaborated that India’s coronagraph is ingeniously sized to enhance observations, making it capable of detecting the origins of CME events that may remain hidden from larger instruments.

Along with three ground-based observatories located in Kodaikanal, Gauribidanur, and Udaipur, the findings produced by Aditya-L1 promise to deepen global understanding of the Sun's behavior, crucial for ensuring stable satellite and power grid operations on Earth. As the mission evolves, astronomers believe it will significantly enhance both local and worldwide scientific research into solar phenomena.

The mission continues to signify India's commitment to contributing to global scientific efforts surrounding solar exploration and space weather forecasting.

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