Planetary Science in the US Faces Challenges and Advancements: Exploring Funding Battles, Mission Milestones, and Global Collaborations

Planetary science in the United States has faced a dynamic period over the past week, marked by both remarkable discoveries and emerging challenges. A significant development out of Washington is the renewed activity of the Planetary Science Caucus in Congress. According to The Planetary Society, over 150 congressional staff, space professionals, and Members of Congress gathered in the Rayburn House Office Building for an event aimed at rallying support for planetary science funding. This comes as NASA’s science programs face potential budget cuts of up to 47 percent in 2026, which, if enacted, could result in the termination of dozens of ongoing and planned missions. Recognizing the magnitude of this threat, the Caucus has successfully organized a congressional letter, signed by representatives from 28 states and both major parties, urging for the restoration of NASA’s Science Mission Directorate budget to nine billion dollars.

Meanwhile, planetary science research continues to advance. NASA highlights that June brings unique skywatching opportunities, with Venus shining brightly in the early morning sky throughout the month and offering enthusiasts a chance to observe planetary movement and gather new data. Looking ahead, major missions are on the horizon for the United States. The upcoming Blue Moon Pathfinder mission by Blue Origin aims to deliver science payloads to the lunar surface, while Intuitive Machines’ IM-3 and Astrobotic’s Griffin Mission One are preparing to continue America’s renewed push for lunar exploration. NASA’s EscaPADE mission, set to launch on Blue Origin’s New Glenn rocket, will head to Mars to study its atmosphere and magnetosphere, providing insights into the red planet’s evolution.

On the international stage, planetary science remains vibrant. Phys.org reports a breakthrough involving the largest comet ever observed from the Oort Cloud by using the Atacama Large Millimeter/submillimeter Array in Chile, shedding light on the early solar system. This underscores how global collaborations continue to expand the scope of American planetary science beyond national borders.

The current climate of planetary science in the United States captures both innovation and uncertainty. Congressional support is being galvanized to protect the continuity of planetary and space sciences, while researchers push forward with high-impact missions and discoveries. The threat of significant budget reductions looms over the sector, but recent bipartisan advocacy demonstrates a strong willingness among lawmakers and the scientific community to maintain U.S. leadership in planetary exploration. This mix of political activity, impending missions, and new scientific findings illustrates a field that is both tested by fiscal pressures and energized by its ongoing quest for knowledge about our solar system and beyond.