Location of Janssen Crater
Janssen Crater is an impact crater in the Arabia quadrangle on Mars at 2.7° N and 322.4° W. and is 154 km in diameter. Its name was approved in 1973, and refers to French astronomer Pierre Janssen. Some close up images of the crater reveal layers in a floor deposit. A picture below show these layers, as well as dark slope streaks. The darker the streak, the younger it is. The layers on the floor of Janssen may have been formed on the bottom of lakes.
|This article about the planet Mars or its moons is a stub. You can help Wikipedia by expanding it.|
|This article about an extraterrestrial geological feature is a stub. You can help Wikipedia by expanding it.|