![How can I set up a rotating 12 hour shift schedule for 3 security guards to ensure 24/7 coverage? [closed]](https://cdn.sstatic.net/Sites/workplace/Img/apple-touch-icon@2.png?v=d39b333f5c58)
Mars's northern ice cap is surprisingly young, planetary scientists find
If you've ever looked at Mars through a telescope, you probably noticed its two polar ice caps. The northern one is made largely of water ice—the most obvious sign that Mars was once a wetter, warmer world. A team of researchers from the German Aerospace Center (DLR) used that ice cap to make surprising discoveries about it and what it tells us about Mars's interior. The research is published in the journal Nature.
If you've ever looked at Mars through a telescope, you probably noticed its two polar ice caps. The northern one is made largely of water ice—the most obvious sign that Mars was once a wetter, warmer world. A team of researchers from the German Aerospace Center (DLR) used that ice cap to make surprising discoveries about it and what it tells us about Mars's interior. The research is published in the journal Nature.
![In Memoriam: Berrien Moore III [1941–2024]](https://assets.science.nasa.gov/dynamicimage/assets/science/esd/earth-observer/2025/2025-in-memoriam/InMemoriam-Moore..jpg)
