The infrared spectrum of nearby Skywalker crater
, for example, is similar to the rest of Charon's craters
and surface, with features dominated by ordinary water ice.
The researchers don't think that any truly massive undiscovered craters
are still lurking on Earth's surface, but Don McCarthy is not so sure.
However, tectonic processes, weathering, and burial quickly obscure or destroy craters
My friends who I shall refer to as musketeers, decided to visit a volcanic crater
that we had checked out on the Internet.
Researchers have identified 248 new impact sites on parts of the Martian surface in the past decade, using images from the spacecraft to determine when the craters
While the distribution of brightness was not exactly what we had expected, practically every measurement related to ice and other volatile compounds on the moon is surprising, given the cosmically cold temperatures inside its polar craters
Substrate contaminants cause craters
because the paint does not wet the contaminated area or immediately dewets from it.
Nasa's Messenger spacecraft is the first to orbit Mercury and the first batch of photos taken in orbit have revealed a pock-marked planet full of craters
from pieces of asteroids and comets.
Many other craters
on Earth are also not visible to the naked eye.
These days, visitors are flocking to Halema'uma'u, a crater
in the summit of Kilauea and the home of the Hawaiian goddess Pele, according to local mythology.
Current exploitation plans call for the use of directional drilling to tap into the near-surface reservoirs beneath the craters
As a child in northern New Jersey, Ken Crater
raised his own organic vegetables.
Moreover the wall separating the two craters
When large asteroids hit the ground, they produce high temperatures and pressures, carving out bowl-shaped features called craters
Instead, they spent one recent class in the university's new $125,000 ``smart lab,'' poring over computerized images of the moon and calculating the age of the lunar craters