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... rate at which the surface of Earth is being cratered can be measured by analysing the sizes and ages of the craters that are found on certain stable areas of the Earth ... , and -1.70 around D = 40 km. The Earth's cratering rate is such that the time interval between impacts producing craters larger then say 3, 15 and 100 km is 180 ... 15,000,000 y respectively. It is found that the extraterrestrial bodies responsible for producing craters of diameters about 15 km are about 250 times more likely to be asteroids than ...

... and outwards. Most of the big stuff will stay right near the crater rim, medium sized pieces may make secondary craters farther out, and lighter material may form lighter-colored rays radiating outwards from the newly formed crater. ---- Answer provided by Thomas Matula, Ph.D. & Kenneth J. Murphy Image:K2S logosmall.jpg Question ...

... '''Year''' - 2004 '''Keywords''' - '''JBIS Reference Code ''' - 2004.57.313 '''Number of Pages''' - 5 Abstract Gusev crater, with 160 km diameter, emerged 3 to 4 billion years ago due to the collision of an immense asteroid with the Martian surface. This enormous crater is situated around the boundary between the southern highlands and northern lowlands. In the south ...

... 63 63 '''Page ''' - 267-277 '''Year''' - 2010 '''Keywords''' - Lunar robotic challenge Pioneer 3-AT tracked crater exploration microrover '''JBIS Reference Code ''' - 2010.63.267 '''Number of Pages''' - 11 Abstract Robotic exploration ... all but the most robust of exploration vehicles. Surface conditions around the rim of large craters are rarely favourable for the descent and, more importantly, ascent of a ground-based vehicle ...

... , because no matter how closely we look we keep finding smaller and smaller craters. Even Moon rocks and craters have craters on them, often called zap pits. One thing we do want to do on the Moon is count the craters of different sizes, and try to get a date of when they happened. This impact ...

The rim of the larger craters would appear similar to a range of mountains as seen from the surface. Traveling through ... diameter) might someday be turned into domed habitats. The meteor crater in Arizona is a good example of how a smaller lunar crater would appear to astronauts on the Moon. ---- Answer provided ...

... '''Page ''' - 74-86 '''Year''' - 2003 '''Keywords''' - Exobiology, Mars, human missions, lander, EVA, communication, paleolake, impact crater, Haughton '''JBIS Reference Code ''' - 2003.56.74 '''Number of Pages''' - 13 Abstract The search for ... scientific activities on Mars. We describe the study of the microbiology of the Haughton impact crater in the Canadian Arctic, from a simulated Mars lander (the FMARS). Impact events have had ...

... fine dust. While it's a really cool idea to skate in the Moon's craters, it would be like skating in a sandbox. ---- Answer provided by US Space and Rocket ...

... Moon. There is no confirmed record of anyone seeing a meteor impact create a new crater on the Moon, but the seismographs left by the Apollo astronauts have detected hundred of ...

... Moon might have regoboarding which would involve sliding down the regolith on the sides of craters. It is likely that new extreme sports will drive a lot of technology advances in ...

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