Dice-size crumbs of bright material have vanished from inside a trench where they were photographed by NASA's Phoenix Mars Lander 4 days ago, convincing scientists that the material was frozen water that vaporized after digging exposed it. "It must be ice," Phoenix says principal investigator Peter Smith of the University of Arizona, Tucson. "These little clumps completely disappearing over the course of a few days, that is perfect evidence that it's ice. There had been some question whether the material was bright salt. Salt can not do that." The chunks were left at the bottom of a trench informally called Dodo-Goldilocks when Phoenix's robotic arm that enlarged trench on June 15, during the 20th martian day, or sol, since landing.
Several were gone when Phoenix looked at the trench early today, on the 24th Sol Also early today, digging in a different trench, the robotic arm connected with a hard surface that has scientists excited about the prospect of next uncovering an icy layer. The Phoenix science team spent Tuesday analyzing new images and data successfully returned from the lander earlier in the day. Studying the initial findings from the new Snow White 2 trench, located to the right of Snow White 1, Ray Arvidson of Washington University in St. Louis, co-investigator for the robotic arm, says, "We have dug a trench and uncovered a hard layer at the same depth as the ice layer in our other trench. " On Sol 24, Phoenix extended the first trench in the middle of a polygon at the Wonderland site. While digging, the robotic arm came upon a firm layer, and after three attempts to dig further, the arm went into a holding position.
Such an action is expected when the robotic arm comes upon a hard surface. Meanwhile, the spacecraft team at Lockheed Martin Space Systems in Denver is preparing a software patch to send to Phoenix in a few days so scientific data can be saved onboard again overnight when needed. Because of a large amount duplicative a file-maintenance data generated by the spacecraft Tuesday, the team is taking the precaution of not storing data in science Phoenix's flash memory, and instead downlinking it at the end of every day, until the conditions that produced those duplicative data files are corrected. "We now understand what happened, and we can fix it with a software patch," says Phoenix Project Manager Barry Goldstein of NASA's Jet Propulsion Laboratory, Pasadena. "Our 3-month schedule has 30 days of margin for contingencies like this, and we have used only one contingency day out of 24 sols. The mission is well ahead of schedule. We are making excellent progress toward full mission success."
Dice-size crumbs of light materials have disappeared from the inside of a trench where they were photographed by NASA's Mars Lander Phoenix 4 days, to convince scientists that the material was frozen water evaporates that after digging.
"It must be ice," says Phoenix principal investigator Peter Smith of the University of Arizona, Tucson. "These small lumps disappear completely during the course of a few days, this is the perfect proof that there is ice. There were some question whether the material was bright salt. Salt can not."
The pieces remained at the bottom of a trench informally called Dodo-Goldilocks at Phoenix digging robotic arm extended on 15 June in the course of the 20th Martian day, or Sol, since the landing. Several were gone when Phoenix looked at the ditch this morning, over 24 Sol.
Also this morning, digging in another ditch, the robotic arm in connection with a hard surface, scientists are excited by the prospect of an afterlife detection icy layer.
The Phoenix team for scientific analysis Thursday new images and data successful return from the lander earlier in the day.
Studies of the first results from the new Snow White 2 ditch, is on the right side of Snow White 1, Ray Arvidson of Washington University in St. Louis, co-investigator for the robotic arm, said: "We have dug a ditch and discovered a hard layer in the same depth as the ice layer in our other ditch. "
On Sol 24, Phoenix extended the first trench in the middle of a polygon on the website Wonderland. While digging, the robotic arm was on a solid layer, and after three attempts to dig further, the arm was in a firm. Such action when the robot arm is based on a hard surface.
Meanwhile, the spacecraft team of Lockheed Martin Space Systems in Denver is preparing a software patch to send to Phoenix in a few days as scientific data can be stored on board again overnight, if necessary. Due to the large amount a double file maintenance data collected by the spacecraft Tuesday, the team takes the pension does not have the storage of data in science Phoenix flash memory, and instead downlinking it at the end of each day, until the conditions that produced the duplicate files are corrected.
"We understand now what happened, and we can fix it with a software patch," says Phoenix Project Manager Barry Goldstein of NASA's Jet Propulsion Laboratory, Pasadena. "Our 3-month plan has 30 days the margin for unforeseen events like this, and we only have one day of contingency sol-gel-24. The mission is well ahead of schedule. We are making excellent progress on the path to success Mission. "
Several were gone when Phoenix looked at the trench early today, on the 24th Sol Also early today, digging in a different trench, the robotic arm connected with a hard surface that has scientists excited about the prospect of next uncovering an icy layer. The Phoenix science team spent Tuesday analyzing new images and data successfully returned from the lander earlier in the day. Studying the initial findings from the new Snow White 2 trench, located to the right of Snow White 1, Ray Arvidson of Washington University in St. Louis, co-investigator for the robotic arm, says, "We have dug a trench and uncovered a hard layer at the same depth as the ice layer in our other trench. " On Sol 24, Phoenix extended the first trench in the middle of a polygon at the Wonderland site. While digging, the robotic arm came upon a firm layer, and after three attempts to dig further, the arm went into a holding position.
Such an action is expected when the robotic arm comes upon a hard surface. Meanwhile, the spacecraft team at Lockheed Martin Space Systems in Denver is preparing a software patch to send to Phoenix in a few days so scientific data can be saved onboard again overnight when needed. Because of a large amount duplicative a file-maintenance data generated by the spacecraft Tuesday, the team is taking the precaution of not storing data in science Phoenix's flash memory, and instead downlinking it at the end of every day, until the conditions that produced those duplicative data files are corrected. "We now understand what happened, and we can fix it with a software patch," says Phoenix Project Manager Barry Goldstein of NASA's Jet Propulsion Laboratory, Pasadena. "Our 3-month schedule has 30 days of margin for contingencies like this, and we have used only one contingency day out of 24 sols. The mission is well ahead of schedule. We are making excellent progress toward full mission success."
Dice-size crumbs of light materials have disappeared from the inside of a trench where they were photographed by NASA's Mars Lander Phoenix 4 days, to convince scientists that the material was frozen water evaporates that after digging.
"It must be ice," says Phoenix principal investigator Peter Smith of the University of Arizona, Tucson. "These small lumps disappear completely during the course of a few days, this is the perfect proof that there is ice. There were some question whether the material was bright salt. Salt can not."
The pieces remained at the bottom of a trench informally called Dodo-Goldilocks at Phoenix digging robotic arm extended on 15 June in the course of the 20th Martian day, or Sol, since the landing. Several were gone when Phoenix looked at the ditch this morning, over 24 Sol.
Also this morning, digging in another ditch, the robotic arm in connection with a hard surface, scientists are excited by the prospect of an afterlife detection icy layer.
The Phoenix team for scientific analysis Thursday new images and data successful return from the lander earlier in the day.
Studies of the first results from the new Snow White 2 ditch, is on the right side of Snow White 1, Ray Arvidson of Washington University in St. Louis, co-investigator for the robotic arm, said: "We have dug a ditch and discovered a hard layer in the same depth as the ice layer in our other ditch. "
On Sol 24, Phoenix extended the first trench in the middle of a polygon on the website Wonderland. While digging, the robotic arm was on a solid layer, and after three attempts to dig further, the arm was in a firm. Such action when the robot arm is based on a hard surface.
Meanwhile, the spacecraft team of Lockheed Martin Space Systems in Denver is preparing a software patch to send to Phoenix in a few days as scientific data can be stored on board again overnight, if necessary. Due to the large amount a double file maintenance data collected by the spacecraft Tuesday, the team takes the pension does not have the storage of data in science Phoenix flash memory, and instead downlinking it at the end of each day, until the conditions that produced the duplicate files are corrected.
"We understand now what happened, and we can fix it with a software patch," says Phoenix Project Manager Barry Goldstein of NASA's Jet Propulsion Laboratory, Pasadena. "Our 3-month plan has 30 days the margin for unforeseen events like this, and we only have one day of contingency sol-gel-24. The mission is well ahead of schedule. We are making excellent progress on the path to success Mission. "
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