Science & Tech · Space · 1 day ago
Seasonal Frost Changes Seen in 32 of 36 Martian Polar Craters
Researchers studied 36 craters in Mars’ northern polar region using images taken from 2006 to 2025.
Bright deposits changed in 32 craters, while four showed no change in brightness.
The shifts may reflect seasonal frost that grows and shrinks around the craters.
The patterns varied from crater to crater, suggesting local conditions shape frost changes rather than one process affecting the whole polar region.
Understanding these deposits could help scientists learn about Mars’ climate history and distinguish local effects from broader climate shifts.
The study points to future modeling of local Martian climates as a next step.
Researchers found seasonal changes in bright deposits in 32 of 36 craters in Mars’ northern polar ice cap region.
The study analyzed images captured by NASA’s Mars Reconnaissance Orbiter from 2006 to 2025.
The changes broadly indicate that ice deposits expand and shrink with the seasons.
Researchers say local conditions, including crater shape and topography, may explain why some craters change while others do not.
Understanding these patterns could help scientists study Mars’ climate history.
- Who
- An international team of researchers.
- What
- The team found seasonal changes in bright deposits in 32 of 36 Martian northern polar craters.
- When
- The images were captured between 2006 and 2025. The study’s publication date is not stated.
- Where
- Craters in the northern polar ice cap region of Mars.
- Why
- To address a gap in knowledge about seasonal changes in polar ice deposits and help study Mars’ climate history.
This story does not have two clearly opposing sides.
NASA’s Mars Reconnaissance Orbiter captured the images of 36 northern polar craters used in the study.
Universe Today reported the finding that 32 of the 36 craters showed changes in bright deposits.
- Craters studied
- 36
- Craters showing changes
- 32
- Image source
- NASA’s Mars Reconnaissance Orbiter HiRISE camera
- Image period
- 2006–2025
- Mars years covered
- MY 28–38
What people are saying
Not all craters exhibit changes in frost coverage from one Mars year to the next.