NASA's Mars Reconnaissance Orbiter (MRO) has detected deposits of glass
within impact craters on Mars.
To help figure that out, Goudge and his colleagues took advantage of the fact that most of the sites are located
within impact craters.
Researchers from Brown University have used satellite data to detect deposits of glass
within impact craters on Mars.
Not exact matches
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.
Smaller subsequent
impacts left
craters within that
crater.
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.
These «disaster species» colonized the harsh waters above the
crater within hundreds of years of the
impact, the...
These «disaster species» colonized the harsh waters above the
crater within hundreds of years of the
impact, the researchers reported December 12 at a news conference at the American Geophysical Union's fall meeting.
LIFE AND DEATH Rock samples collected from the Chicxulub
crater during a drilling project in the Gulf of Mexico earlier this year suggest that microbes returned to the site
within hundreds of years of the dino - killing
impact.
Their results indicate that only about half of the Alamo
impact crater and its related deposits are now exposed
within the region, and they estimate its total diameter to be between 111 and 150 km.
Water then interacted with
impact - heated rock to enable synthesis of complex organic molecules, and the enclosed
crater itself was a microhabitat
within which life could flourish.
The
impact that formed a large basin known as Orientale in the western area of the moon's near side, which the group investigated in detail, obliterated all prior
craters within the basin itself, an area of nearly 700,000 square kilometers.
These units record the devastation of the
impact, trace fossils from surviving species, and fossils
within the limestone revealing that
within 30,000 years of
impact, life inside the
crater was back in full swing.
The lander (along with other debris believed to be related to the spacecraft's descent process) was found
within the expected landing area for the probe, an
impact crater designated Isidis Planitia, near to the Martian equator.
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,
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,
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,
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).