Solar Atmosphere

Probing the Solar Wind with Spacecraft Radio Occultation Signals: Chasing a Unified Method to Probe the Sun

Authored by Keshav Aggarwal & Raj Kumar Choudhary., Edited by Shreedevi P. R. February 1, 2026

Introduction The solar wind, a continuous outflow of charged particles from the solar corona, plays a fundamental role in shaping the heliosphere and driving space weather. Its interaction with planetary magnetospheres and atmospheres regulates magnetospheric dynamics, influences atmospheric escape, and governs space weather hazards that can affect both space- and ground-based technologies. Despite over six …[Read More]

Decoding the Sun’s Past: Dr. Theodosios Chatzistergos, 2024 e-SWAN Alexander Chizhevsky Medalist, on his Scientific Journey

Shreedevi P R April 1, 2025

1. Congratulations on receiving the e-SWAN Alexander Chizhevsky Medal for outstanding contributions to space weather and space climate. How does this recognition reflect your work and impact in the field? Thank you! I am deeply honored to receive this award, which recognizes not just my work but the collective efforts of many collaborators over the …[Read More]

The 2017 solar eclipse and scientific discoveries

Koen Hendrickx August 14, 2017

The next solar eclipse is upon us. On August 21 the moon will pass between the Sun and an observer’s point of view in America and block out daylight, creating an eerie gloom in the sky. The transit of the moon between the Earth and Sun occurs about every 18 months, but for your particular city it …[Read More]

Capturing a Whole Total Eclipse of the Sun: Megamovie

Hugh S Hudson July 25, 2017

by Hugh S Hudson (U. of Glasgow and UC Berkeley) Normally solar eclipses give an observer only a fleeting moment (minutes at most) to enjoy the solar corona. We aim to amplify that considerably in the August 21 eclipse across North America. The plan is simple: Megamovie will capture everybody’s images, especially those from a …[Read More]