<img src="https://www.esa.int/var/esa/storage/images/esa_multimedia/videos/2026/03/smile_pre-launch_media_briefing/27171623-2-eng-GB/Smile_pre-launch_media_briefing_card_full.jpg" alt="">
Video:
01:00:11
<p>Watch the replay of the Smile pre-launch media briefing. The briefing covered key details ahead of the mission’s launch aboard a Vega-C rocket from Europe’s Spaceport in French Guiana. Smile is a joint mission between ESA and the Chinese Academy of Sciences, designed to study how the solar wind interacts with Earth’s magnetic field.</p>
Video:
01:00:11
Watch the replay of the Smile pre-launch media briefing. The briefing covered key details ahead of the mission’s launch aboard a Vega-C rocket from Europe’s Spaceport in French Guiana. Smile is a joint mission between ESA and the Chinese Academy of Sciences, designed to study how the solar wind interacts with Earth’s magnetic field.
Solar wind is a stream of charged particles released from the upper atmosphere of the Sun. It consists mainly of electrons and protons and can have significant effects on planetary atmospheres and magnetic fields.
The Earth's magnetic field is a protective shield generated by the movement of molten iron in its outer core. It plays a crucial role in protecting the planet from solar and cosmic radiation, as well as guiding navigation for various species and human technologies.