[{"n": "Cold spot (astronomy)", "u": "/e/impact-craters/cold-spot-astronomy/", "s": "Cold spots are young impact features with low nighttime temperatures."}, {"n": "Complex crater", "u": "/e/impact-craters/complex-crater/", "s": "Large impact craters with uplifted centers and terraced walls."}, {"n": "Crater counting", "u": "/e/impact-craters/crater-counting/", "s": "Estimating planetary surface ages by counting impact craters."}, {"n": "Expanded crater", "u": "/e/impact-craters/expanded-crater/", "s": "Impact craters that expand due to subsurface ice sublimation."}, {"n": "Jeokchung-Chogye", "u": "/e/impact-craters/jeokchung-chogye/", "s": "Unconfirmed impact structure in Asia and Russia."}, {"n": "Multi-ringed basin", "u": "/e/impact-craters/multi-ringed-basin/", "s": "A massive impact crater with multiple concentric mountain rings."}, {"n": "Peak ring", "u": "/e/impact-craters/peak-ring/", "s": "A complex crater with a ring instead of a central peak."}, {"n": "Permanently shadowed crater", "u": "/e/impact-craters/permanently-shadowed-crater/", "s": "Depressions in permanent darkness, preserving water ice and volatiles."}, {"n": "Pseudotachylyte", "u": "/e/impact-craters/pseudotachylyte/", "s": "Rock formed by frictional melting during earthquakes, landslides, and impacts."}, {"n": "Ray system", "u": "/e/impact-craters/ray-system/", "s": "Radial ejecta streaks from impact craters across the solar system."}, {"n": "Rim (crater)", "u": "/e/impact-craters/rim-crater/", "s": "The raised edge of an impact crater, varying with size and gravity."}, {"n": "Secondary crater", "u": "/e/impact-craters/secondary-crater/", "s": "Secondary craters form from ejecta of larger primary impacts."}, {"n": "Shatter cone", "u": "/e/impact-craters/shatter-cone/", "s": "Rare conical fractures formed by high-pressure shock."}]