Planetary science in the United States and worldwide is experiencing a dynamic period marked by significant mission updates, scientific findings, and future exploration planning. In the United States, NASA continues its focus on reestablishing contact with the Lunar Trailblazer spacecraft, a part of the Small Innovative Missions for Planetary Exploration or SIMPLEx program. Contact with the spacecraft was lost just after launch in February 2025, but mission controllers remain hopeful as increasing sunlight during the spring and early summer could recharge its batteries, potentially allowing for renewed communication and continuation of its lunar mapping objectives. If successful, the spacecraft could return to lunar orbit and resume its search for water ice and minerals. NASA's contingency planning includes a review to decide the fate of the mission should efforts to regain contact prove successful by mid June, otherwise closure procedures will begin. An independent review board is also examining the issues to glean lessons for future cost effective planetary missions, reflecting NASA's focus on innovation and risk management for advancing lunar science.

Meanwhile, skywatchers across the country are benefiting from optimal planetary viewing conditions. Venus shines brightly in the morning sky, Mars remains visible in the west after sunset, and Saturn gradually rises earlier each night. The June solstice and clear skies provide further opportunities to observe not only the planets but also the structure of our own galaxy, as described by NASA’s monthly skywatching guide. These observations support ongoing public interest in planetary science and engagement with astronomy.

Major research updates this week include findings from the Perseverance rover on Mars. According to Purdue University’s Department of Earth, Atmospheric, and Planetary Sciences, there is strong evidence of a volcano near Jezero Crater, the rover’s landing site. The rover may have collected samples that, once analyzed, could help date the volcanic activity, offering new insights into the geologic history of Mars. This discovery adds an important dimension to our understanding of Martian evolution and could inform future missions.

Jupiter’s moon Io is also in the spotlight. Recent flybys have challenged long standing theories about its interior, revealing that much remains unknown about this volcanically active world. These findings are reshaping planetary scientists’ approach to studying geologically dynamic moons in our solar system.

Experts in the United States are further shaping the direction of human space exploration. A new consensus report led by Purdue University faculty has outlined key U S priorities for sending humans to Mars. The report emphasizes the need to develop mission architectures, invest in critical technologies, mitigate risks, and foster collaborations with international partners and private industry. Together, these advances underscore a period of rapid progress and renewed ambition in planetary science, both nationally and globally.

This content was created in partnership and with the help of Artificial Intelligence AI