Sentences with phrase «smaller craters within»
The study looked at smaller craters within the larger SPA basin made by impacts that happened millions of years after the giant impact that formed the basin.
https://www.sciencedaily.com/ Not exact matches
Smaller subsequent impacts left craters within that crater.
For the next 6 years, smaller explosive eruptions built a rounded, rocky dome of hardened lava within the new crater.
«Within a few kilometers of Victoria are smaller, older craters that might tell us more about Mars's past,» Callas says.
Within this crater the Opportunity rover — just slightly too small to see here — is studying the landscape up close, finding evidence of ancient, salty waters on Mars.
Cerealia Facula, in the center of the crater, consists of bright material covering a 6 - mile - wide (10 - kilometer - wide) pit, within which sits a small dome.
LRO's Lunar Orbiter Laser Altimeter (LOLA), which can determine the height of a small patch of lunar soil to within 10 centimeters, has enabled scientists to compile a detailed topographical map of 5185 lunar craters, all more than 20 kilometers in diameter.
In 2000, for instance, Malin published pictures of small gullies that, judging from the absence of meteorite craters in them, seem to have been formed by running water within the past few million years.
In 2014 the eruption was explosive, but in 2007 the eruption produced little ash and instead created a small lava flow within the crater.
«Adding these small - scale deposits to the large deposits within craters adds significantly to the surface ice inventory on Mercury.»
In addition, the collision with a 372 - kilogram (820 - pound) projectile launched by NASA's Deep Impact probe in 2005 has created a 150 - meter - wide (490 - foot - wide) crater with a small mound in the center, as some of the ejecta of the impact apparently fell back down within the crater, but the crater's relatively soft outline indicates that its edges have undergone significant changes since the 2005 impact (NASA / STARDUST / NExT news release; Astronomy Picture of the Day; David Shiga, New Scientist, February 15, 2011; Jonathan Amos, BBC News, February 15, 2011; and Richard A. Lovett, Nature News, February 15, 2011).
Vila Franca is an rare beach located in the crater of an ancient volcano, within a small islet off Sao Miguel.