Mercury Scout Mission Concept with Solar Sail Propulsion
📖 Full Retelling
The planet Mercury is the closest planet to the Sun, and also the most difficult for spacecraft to visit and explore. This is because as spacecraft get closer to Mercury, the Sun’s enormous gravity pulls in the spacecraft, greatly increasing its speed and making it hard to slow down without large amounts of fuel. But what if a spacecraft could both travel to and explore Mercury without fuel? This could drastically reduce mission costs while delivering impactful science.
Entity Intersection Graph
No entity connections available yet for this article.
Original Source
Mercury Scout Mission Concept with Solar Sail Propulsion By Laurence Tognetti, MSc - April 01, 2026 05:14 AM UTC | Missions The planet Mercury is the closest planet to the Sun, and also the most difficult for spacecraft to visit and explore. This is because as spacecraft get closer to Mercury, the Sun’s enormous gravity pulls in the spacecraft, greatly increasing its speed and making it hard to slow down without large amounts of fuel. But what if a spacecraft could both travel to and explore Mercury without fuel? This could drastically reduce mission costs while delivering impactful science. Now, a team of researchers from Brown University might be one step closer to making this mission a reality, as they propose a solar-sail-powered Discovery-class mission concept called Mercury Scout, which they introduce in a study recently presented at the 57th Lunar and Planetary Science Conference. A Discovery-class mission is a low-cost (sub-$1 billion) NASA mission designed for faster development compared to larger Flagship missions, which range in the billions of dollars. For context with Mercury, NASA’s MESSENGER mission, which became the first mission to orbit Mercury, was a Discovery-class mission. For the study, the researchers discussed Mercury Scout’s propulsion, science goals, scientific instruments, spacecraft design, and communication, and propulsion. Arguably the most intriguing aspect of Mercury Scout is the solar-sail propulsion, which uses solar radiation to power a spacecraft. Along with not requiring fuel, the researchers note this method could also be used to control spacecraft direction and control. Additionally, with the reduced number of components and smaller spacecraft size, the researchers note that solar-sail propulsion could also prolong the spacecraft lifetime, increasing greater scientific data collection about the closest planet to the Sun. Until now, the only spacecraft to have successfully used solar-sail propulsion in space is Japan’s IKAROS mi...
Read full article at source