The session, led by Philippe Kletzkine —  an expert from ESA responsible for guiding the mission’s development, launch, and operations to meet its scientific, technical, and budgetary objectives —  delved deep into the experiences and lessons learned from these missions, highlighting both the immense challenges and the remarkable opportunities they presented. 

Rosetta and Philae: Miniaturized Laboratories in Deep Space 

The Rosetta mission, developed by the European Space Agency (ESA), was launched on 2 March 2004 aboard an Ariane rocket from Europe’s Spaceport in French Guiana with the ambitious goal of studying Comet 67P/Churyumov-Gerasimenko and the key challenge was bringing comet samples back to Earth, which was nearly impossible. The solution? Miniaturized high-performance laboratories sent directly to the comet, including the Philae Lander, which performed the first successful landing on a comet’s surface. 

The mission comprised two main elements:

• The Rosetta orbiter, equipped with a suite of scientific instruments to remotely study the comet’s nucleus, coma, gas, and dust. 

 Challenges of Rosetta 

Despite these formidable challenges, Rosetta became the first mission to rendezvous with and escort a comet on its journey around the Sun. It reached comet 67P in August 2014 and deployed Philae for its historic landing, successfully delivering groundbreaking scientific data and demonstrating the strength of international cooperation among ESA member states. 

Solar Orbiter: Unlocking the Secrets of the Sun 

The second part of the webinar turned to Solar Orbiter, a joint ESA-NASA mission launched on February 2020, designed to explore the Sun and its effects on the heliosphere. The mission’s science objectives included studying how the Sun creates and controls the heliosphere and why solar activity changes over time. 

Solar Orbiter will travel closer to the Sun than any previous mission (down to about 0.28 astronomical units ≈ 42 million km), providing unprecedented data. It combines in-situ measurements of solar wind with high-resolution imaging to gain deeper insights into solar activity. However, the spacecraft faces significant communication challenges due to its proximity to the Sun, requiring careful long-term planning for its operations.

The mission will provide groundbreaking insights into the Sun, working in synergy with NASA’s Parker Solar Probe to unlock the mysteries of solar physics. 

Bridging Space Exploration and the Future of In-Space Power Solutions 

The insights shared during the 4th EIC Space Portfolio Webinar align closely with the goals of RePowerSiC, particularly in advancing technologies that enable future space-based energy systems. The technical and operational challenges discussed—such as the need for specialized spacecraft design, advanced power solutions, and autonomous systems—are directly relevant to the development of wireless power transmission systems for In-Space Solar Energy Harvesting. At the end of the webinar, a Q&A session allowed for interactions with the audience. One of the questions raised concerned how long the Solar Orbiter mission could be extended to continue collecting data. In response, Philippe Kletzkine explained that Solar Orbiter is expected to keep providing valuable scientific data for many years to come.  

The webinar offered an excellent platform to discuss the challenges and opportunities of future space missions, highlighting the importance of innovation, collaboration, and detailed mission planning for successful exploration.