Aditya-L1 Mission: ISRO invites scientists to submit first "AO Cycle" proposals

ISRO Calls Scientists to Propose Studies in Aditya-L1 First AO Cycle (Image: Canva)

• ISRO invites scientists to propose research using Aditya-L1 solar mission data.
• Aditya-L1 enters open science phase, boosting India's solar research ecosystem.
• Over 23TB of mission data now public for targeted solar physics studies.

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India’s solar mission Aditya-L1 has entered a crucial scientific phase. ISRO has opened its first Announcement of Opportunity cycle. Scientists are now invited to propose research using mission data. The move signals a shift from mission deployment to active discovery. It also opens Aditya-L1 to the wider scientific community.

What is Aditya-L1?

Aditya-L1 is India’s first dedicated solar observatory. It studies the Sun from the Sun–Earth Lagrange Point L1. This location allows uninterrupted views of solar activity. The mission tracks solar flares, coronal heating and solar winds. These phenomena directly influence Earth’s space environment. Understanding them helps predict space weather impacts.

What ISRO has announced?

ISRO has released its first formal call for science proposals. This is known as the Announcement of Opportunity cycle (AO). Researchers can request access to Aditya-L1 observations. More than 23 terabytes (TB) of mission data are already public. Several scientific papers have emerged from early observations. Now, structured research proposals will guide future observations.

AO Cycle: Inviting Proposals for Solar Research

The primary goal is maximising scientific returns. It invites scientists to propose research using mission data. These proposals request observation time or specific datasets. ISRO wants targeted studies using Aditya-L1 instruments.

These studies must address key solar physics questions. The mission focuses on the Sun’s atmosphere and magnetic fields. It also examines how solar activity shapes interplanetary space. Another goal is improving space weather forecasting capability.

Why this step is necessary? 

This announcement marks Aditya-L1’s transition into open science. It allows independent researchers to shape mission outcomes. Such openness strengthens India’s space science ecosystem. The AO process mirrors practices followed by global space agencies. It places Aditya-L1 alongside missions like SOHO and SDO. This elevates India’s role in solar and heliophysics research.

What this means for the future?

Better solar observations mean improved space weather predictions. These forecasts protect satellites, astronauts and power systems. The first scientific data from Aditya‑L1 was formally released on 6 January 2025, marking one year since the spacecraft entered its operational halo orbit. Aditya-L1’s data will shape solar science for years. The first AO cycle sets the scientific direction. The Sun is now open for deeper investigation.