- Sources of Water and Hydroxyl are Widespread on the Moon https://www.psi.edu/blog/sources-of-water-and-hydroxyl-are-widespread-on-the-moon/ 2 comments space
- Passing stars disturb the orbits of giant planets which then influencing the orbital eccentricity of the Earth and consequently its climate. One known stellar passage, the Sun-like star HD 7977, occurred 2.8 million years ago. https://www.psi.edu/blog/passing-stars-altered-orbital-changes-in-earth-other-planets/ 5 comments science
- Volcanoes on Mars Could Be Active, Raise Possibility of Recent Habitable Conditions https://www.psi.edu/news/recentmarsvulcanism 5 comments space
- Mercury found to be tectonically active http://www.psi.edu/news/mercurytectonics2 4 comments science
- The so-called "Tunguska event" explosion in Siberia happened 108 years ago today. An eyewitness said, "Where the body disappeared behind the horizon, a pillar of dark smoke rose up." https://www.psi.edu/epo/siberia/siberia.html 10 comments history
- Pluto’s Subsurface Ocean May Likely Exist Today http://www.psi.edu/news/barrpluto 4 comments space