Sentences with phrase «large impact craters»

NASA's Cassini spacecraft captured this view of Saturn's moon Enceladus that shows wrinkled plains that are remarkably youthful in appearance, being generally free of large impact craters.

Clays also tend to be found in and around large impact craters, where material from deep below the surface has been excavated.

Scientists are interested in dune fields isolated within large impact craters because their dark color suggests that the dust covering much of the rest of the planet does not accumulate there.

Among these were Copernicus, Gassendi and Tycho, large impact craters containing central peaks that were thrust upward at the time of impact, bringing material from deep within the lunar crust to the surface.

«But the scales of lightning strikes are small and not likely to be confused for kilometer - size or larger impact cratering events.»

It is the oldest and largest impact crater recognized on Earth's surface.

Some of this brighter material appears to have flowed further downslope to form the heart shape, as the small impact occurred on the ejecta blanket of a much larger impact crater.

The Cassini - Huygens mission revealed that Titan's surface is quite young by planetary standards, with only a few large impact craters observed.

Vesta has a very large impact crater located around its south pole (more).

For their exhibition at the MCA, the Belknaps look both to the skies overhead and the ground beneath our feet to find their subjects, whether they are modeling the cratered surface of the moon or distant exoplanets in a set of new sculptures or comparing the two largest impact craters on the moon and the earth in other recent works.

Researchers from Brown University and the University of Hawaii have found some mineralogical surprises in the Moon's largest impact crater.

A basin in the Falkland Islands exhibits traits of a large impact crater, according to a new analysis by a team of scientists.

After almost three months of round - the - clock drilling, geologists have finished a 1.1 - mile borehole to the bottom of the United States» largest impact crater, a 53 - mile - wide depression at the mouth of the Chesapeake Bay.

At first glance, the swirls do not appear to be related to large impact craters or any other topography.

Although scientists have drilled into the buried crater before on land, this is the first offshore effort, and also the first to go after the crater's «peak ring» — a circular ridge inside the crater rim that's characteristic of the solar system's largest impact craters.

And by drilling into a circular ridge inside the 180 - kilometer - wide crater rim, scientists hope to settle ideas about how such «peak rings,» hallmarks of the largest impact craters, take shape.

And a mission to return a sample from the moon's largest impact crater would have been some comfort to lunar scientists still smarting from Obama's decision to redirect NASA's crewed space exploration from the moon to near - Earth asteroids.

Moreover, they add, five out of the six largest impact craters of the last 260 million years on earth correlate with mass extinction events.

By drilling into a circular ridge inside the 180 - kilometer - wide crater rim, researchers also hope to nail down the processes that form «peak rings»: hallmarks of the largest impact craters, which planetary scientists have seen elsewhere in the solar system but which erosion has erased from other big craters on Earth.

The impact is thought to have occurred between 2008 and 2014, but NASA's High - Resolution Imaging Science Experiment (HiRISE) camera revealed in 2016 that two large impact craters were surrounded by up to 30 smaller craters.