Scientists find potential evidence of methanogenesis, a biological process, on Saturn’s moon Enceladus. By Becky Ferreira | MOTHERBOARD The ocean interior of Saturn’s moon Enceladus may have the “temperatures and chemical energy sources necessary for habitable conditions,” according to new research published in Science on Thursday. This major finding is the result of an extremely […]
« They look at us. » That is the impressionthat wecould havetwobright spotsside by side onCeresappeared on thephoto taken at46,000miles away,on 19February.The dwarfplanetinonly hadin previousvigils. Thetweetsaysit isa « variable »stain.
ChrissRussell,thecharge of theDawnmission, the spacecraftthat took thephoto,provided the followingexplanation: « The bright spotnow has acompanion of alesserbrightness,but apparentlyin the samecrater.This may indicatea similar originto volcanism, but it will bea better resolutionbeforemaking suchgeologicalinterpretations « >> Read:. A mysteriousradio signalcamefromailleursLeresponsible for theshooting,AndreasNathuesadds that »the bright spotis toosmall forthe camera, butdespite its size, it is brighter thananythingelse onCeres.This is reallyunexpected andit remains amystery to us. « Dawnshould takenew picturesin Marchwhichmayhelp tofind answersto this.
What created this unusual hole in Mars? The hole was discovered by chance on images of the dusty slopes of Mars’ Pavonis Mons volcano taken by the HiRISE instrument aboard the robotic Mars Reconnaissance Orbiter currently circling Mars. The hole appears to be an opening to an underground cavern, partly illuminated on the image right. Analysis of this and follow-up images revealed the opening to be about 35 meters across, while the interior shadow angle indicates that the underlying cavern is roughly 20 meters deep. Why there is a circular crater surrounding this hole remains a topic of speculation, as is the full extent of the underlying cavern. Holes such as this are of particular interest because their interior caves are relatively protected from the harsh surface of Mars, making them relatively good candidates to contain Martian life. These pits are therefore prime targets for possible future spacecraft, robots, and even human interplanetary explorers.
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