Sentences with phrase «ancient impact»

Ancient impact craters on Mars were probably also home to hydrothermal activity, making them good places to search for signs of life, the team reports online February 19 in Geochimica et Cosmochimica Acta.

The central region, known as the southern highlands, is heavily pockmarked by ancient impact sites, while a large section in the upper left of the image is taken up by the Hellas Basin.

The researchers think volcanic lightning or the heat of ancient impacts on Mars» surface were responsible for nitrogen fixation on the Red Planet.

A third theory holds that the crater chains are tied to ancient impacts on Mars.

Given all those constraints, the 15 ancient impacts Simonson and company have studied probably represent only a tiny fraction of the total number that struck during that era.

Researchers generally agree mascons resulted from ancient impacts billions of years ago.

When NASA's Lunar Prospector probe circled the moon in 1998, it revealed a highly reflective plain lying between two ancient impact craters.

Phobos's soil may also contain debris blasted off Mars by ancient impacts.

Scientists have explained Sputnik Planitia's youthful appearance by positing that it is an ancient impact basin — a giant crater filled with thick floes of younger ice that, driven by heat seeping up from below, churn and refresh the surface.

Chicxulub Crater is an ancient impact crater buried underneath the Yucatan peninsula, with its center located approximately underneath the town of Chicxulub, Yucatan, Mexico.

A fresh hypothesis suggests that the chaotic terrain in and around Aram Chaos resulted when a buried ice lake trapped in the ancient impact crater suddenly collapsed.

Pluto's famous «heart,» half of which was created by an ancient impact, offers clues about a possible subsurface ocean.

The latest images of Saturn's rings, which show propeller - shaped clumps and moonlets shattered by an ancient impact, are also giving astronomers a lot to think about.

And in September, Brandon Johnson, also at Brown, and colleagues published in the same journal that an ancient impact crater called Sputnik Planum (part of the world's famous «heart») also shows signs of sitting over a watery jackpot.

At number 1: Was Pluto's frozen heart formed in an ancient impact basin and was it once closer to the north pole?

Was Pluto's frozen heart formed in an ancient impact basin and was it once closer to the north pole?

Chesapeake Bay is the site of an ancient impact crater, caused by a comet or meteor.