In the United States, planetary science news this week has centered on new missions, fresh observations, and evolving views of worlds near and far. At Mars, NASA reports that its Mars Atmosphere and Volatile Evolution spacecraft, known as Maven, recently experienced a loss of signal with ground stations while in orbit around the Red Planet. Engineers at the agency’s Goddard Space Flight Center and partners across the Deep Space Network are working to restore full communications, highlighting both the vulnerability and resilience of long duration planetary missions.
Back on Earth, NASA’s Planetary Defense Coordination Office has released its December update on near Earth asteroids. According to the agency, more than thirty two thousand near Earth asteroids are now cataloged, with several small objects making close, but safe, approaches this month. This growing census reflects an emerging pattern. The United States is steadily shifting from discovery only toward a fuller strategy of tracking, characterizing, and eventually testing techniques to deflect hazardous objects if ever needed.
While not a traditional planet focused mission, a key development in space weather research will shape how planetary scientists understand the space environment around Earth. NASA announced that the Cross Scale Investigation of Earth’s Magnetotail and Aurora mission, called Cinema, led by Dartmouth College with management by Johns Hopkins Applied Physics Laboratory, has been selected to advance into its next development phase. The mission will fly nine small satellites in polar low Earth orbit to study how energy flows through Earth’s magnetosphere and drives auroras and magnetic storms. Dartmouth notes that Cinema could launch around the end of this decade, offering a new window into the dynamic plasma environment that also affects other planets with magnetic fields.
Looking outward, planetary scientists are digesting new results about worlds beyond our solar system. Carnegie Science reports that observations with the James Webb Space Telescope reveal a thick atmosphere on the ultra hot lava world known as T O I five six one b, challenging theories that such close in rocky planets quickly lose their air. In parallel, researchers writing in Science Daily describe how faint methane signals from the nearby Earth size exoplanet Trappist one e may hint at a real atmosphere, though stellar activity could be mimicking that signal, underscoring how complex it is to read potential habitability from afar.
Together, these stories trace a clear theme. United States led planetary science is simultaneously deepening our knowledge of the local space environment, safeguarding Earth, and probing the diversity of planets across the galaxy.
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