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NASA MAVEN Mission to Mars
Works at Mars' Upper Atmosphere
Attended University of Colorado - Boulder
Lives in an elliptical orbit around Mars (150 km x 6,200 km)
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MAVEN Completes First Deep Dip Campaign

The #MAVEN spacecraft has completed the first of five deep-dip maneuvers designed to gather measurements closer to the lower end of the ‪#‎Martian‬ upper atmosphere.

"During normal science mapping, we make measurements between an altitude of about 150 km and 6,200 km (93 miles and 3,853 miles) above the surface,” said Bruce Jakosky, MAVEN principal investigator at the University of Colorado Boulder's Laboratory for Atmospheric and Space Physics (+LASP CUBoulder). “During the deep-dip campaigns, we lower the lowest altitude in the orbit, known as periapsis, to about 125 km (78 miles) which allows us to take measurements throughout the entire upper atmosphere.”

The 25 km (16 miles) altitude difference may not seem like much, but it allows scientists to make measurements down to the top of the lower atmosphere. At these lower altitudes, the atmospheric densities are more than ten times what they are at 150 km (93 miles).

Read the full release, here:
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MAVEN First Deep-Dip Campaign Underway

The ‪#‎MAVEN‬ spacecraft is now well within the targeted density corridor between 2.0 - 3.5 kg/km³ and is conducting initial deep-dip observations as planned.

Today (Feb. 13) is the first full day of the planned five days at the deep-dip altitudes. All systems are performing nominally and instruments are collecting data.

MAVEN is the first mission devoted to understanding the ‪#‎Martian‬ upper atmosphere. These deep-dip campaigns will provide measurements down to the top of the well-mixed lower Martian atmosphere, giving scientists a full profile of the top of the atmosphere.

These measurements will allow scientists to characterize the current state of the upper atmosphere and ionosphere of Mars, determine the rates of loss of gas to space today, and extrapolate backward in time in order to determine the total loss to space through time. With each new measurement, MAVEN brings us one step closer to understanding the mystery of Mars' climate history.
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Like the density corridor concept.
Thanks for sharing and teaching.
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Meteorite may represent ‘bulk background’ of Mars’ battered crust

New spectroscopic analysis of “Black Beauty,” a meteorite found in the Moroccan desert in 2011, has given scientists a better picture of the crust beneath Mars’ red dust.

The meteorite (NWA 7034) is like no other rock ever found on Earth. It’s been shown to be a 4.4 billion-year-old chunk of the #Martian crust, and according to a new analysis, rocks just like it may cover vast swaths of #Mars.

"Black Beauty" is a breccia, a mashup of different rock types welded together in a basaltic matrix. It contains sedimentary components that match the chemical makeup of rocks analyzed by the Mars rovers. Scientists concluded that it is a piece of Martian crust—the first such sample to make it to Earth.

Read the full +Brown University news release, here:
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Wonder if Earth rocks, with microbes landed on Mars.... 
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MAVEN will begin first "deep dip" campaign on February 10th

#MAVEN’s primary mission includes five 5-day “deep-dip” campaigns, in which the periapsis (lowest point in the orbit) is lowered from about 93 miles (150 km) to about 77 miles (125 km). The first “deep dip” maneuver will begin on Tuesday, February 10, 2015, with a two-day “walk down” into the target density corridor of 2.0 - 3.5 kg/km3. The density of #Mars' atmosphere in the current science-mapping orbit is about 0.12 kg/km3.

At altitude of 77 miles (125 km), Mars’ atmosphere is around 30 times more dense than it is at MAVEN’s nominal science mapping periapsis of 93 miles (150 km). To accommodate for the increase in atmospheric density, the spacecraft's solar panels are bent at a 20° angle, which shifts the center of air pressure away from the center of gravity, providing self-stabilization. 

The "deep dip” campaigns will provide data from the boundary where Mars’ upper and lower atmospheres meet—also referred to as the "homopause"—enabling the spacecraft to sample the entire upper atmosphere of Mars for the first time.
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Sinqerisht : " ADAMI + EVA ! " i MARSIT . SUKSESE PA FUND
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MAVEN Spacecraft Statistics

This video shows some MAVEN spacecraft statistics, and was prepared for the live broadcast of MAVEN entering Mars' orbit on September 21, 2014.

(Video credit: NASA's Goddard Space Flight Center)
+NASA Goddard 
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MAVEN Identifies Links in Chain Leading to Atmospheric Loss

Early discoveries by +NASA's newest #Mars orbiter are starting to reveal key features about the loss of the planet’s atmosphere to space over time.

The findings are among the first returns from the #MAVEN mission, which entered its science phase on Nov. 16. The observations reveal a new process by which the solar wind can penetrate deep into a planetary atmosphere. They include the first comprehensive measurements of the composition of #Mars’ upper atmosphere and electrically charged ionosphere. The results also offer an unprecedented view of ions as they gain the energy that will lead to their to escape from the atmosphere.

“We are beginning to see the links in a chain that begins with solar-driven processes acting on gas in the upper atmosphere and leads to atmospheric loss,” said Bruce Jakosky, MAVEN principal investigator with the Laboratory for Atmospheric and Space Physics (+LASP CUBoulder) at the +University of Colorado Boulder. “Over the course of the full mission, we’ll be able to fill in this picture and really understand the processes by which the atmosphere changed over time.”

The results were presented at a press conference held today (Dec. 15, 2014) at the American Geophysical Union (AGU) Fall Meeting in San Francisco, CA.

To read the full story, please visit:

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Just now i Attended a lecture on
BY Dr. Jaydeep Mukherjee,
Director, NASA Florida Space Grant Consortium
it was just awesome.
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MAVEN instruments all collecting data as expected during deep-dip

The initial MAVEN deep-dip campaign continues to go well, as the NASA ‪#‎Mars‬ orbiter maintains its targeted atmospheric density corridor between 2.0 - 3.5 kg/km³.

All of the MAVEN science instruments have been in "deep-dip" mode since a series of three successful walk-down maneuvers delivered the spacecraft into the target corridor.

All instruments are performing nominally and collecting data as expected.

For more information about the ‪#‎MAVEN‬ instrument suite, visit:


+NASA Jet Propulsion Laboratory
+NASA Goddard 
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MAVEN spacecraft entering first “deep-dip” of the mission

The initial walk-in maneuver of MAVEN's first"deep-dip" campaign has been successfully carried out, lowering the periapsis of the MAVEN spacecraft about 20 km to an altitude of about 134 km with a ∆V burn of 3.3 m/sec. The campaign will continue today with another periapsis-lowering maneuver, designed to insert the spacecraft into the deep-dip target density corridor between 2.0 - 3.5 kg/km³.

The targeted region of Mars' atmosphere, being explored for the very first time, is about 30 times more dense than the area explored by MAVEN during its primary science mapping operations, where the maximum atmospheric density is about 0.15 kg/km³.

Yesterday's successful maneuver is the first of three maneuvers that will “walk” the MAVEN spacecraft into the deep-dip density corridor.
Last week, mission operators successfully ran the full sequences for a “deep-dip demo,” which included everything except having the lower periapsis. The instruments were in their deep-dip modes and the spacecraft was in its deep-dip orientation for the test.

The first of five planned deep-dip campaigns includes a two-day “walk-down” into the target density corridor, which will be followed by five days with a periapsis in this corridor (~125 km), and then another two days of periapsis raising maneuvers to bring the spacecraft back into its nominal science mapping orbit.

For more information about MAVEN's science mapping orbit, visit:
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U.S.-India Joint Statement Includes Renewed Commitment to Space Cooperation

U.S. President Barack Obama visited yesterday with the Prime Minister of India, Narendra Modi, as part of the President's three-day visit. The two assessed the extensive bilateral strategic and global partnership between their two countries and pledged to continue to enhance cooperation across the spectrum of human endeavor to better their citizens’ lives and that of the global community. 

The two leaders made a promise to translate their commitment of "Chalein Saath Saath”: “Forward Together We Go" of September into action through "Sanjha Prayaas; Sab Ka Vikaas": "Shared Effort; Progress For All".

The two also took note of ongoing U.S.-India space cooperation, including the first face-to-face meeting of the ISRO-NASA Mars Working Group from January 29-31 in Bangalore, in which the two sides will consider opportunities for enhanced cooperation in #Mars exploration, including potential coordinated observations and analysis between ISRO's Mars Orbiter Mission and MAVEN. Over a cup of tea, the Prime Minister and the President welcomed continued progress toward enhanced space cooperation via the U.S.-India Civil Space Joint Working Group, which will meet later this year in India.

NASA - National Aeronautics and Space Administration and ISRO - Indian Space Research Organization have agreed to conduct the joint NASA-ISRO Synthetic Aperture Radar (NISAR) mission (, which will study global environmental change on Earth.

To read the full White House Joint Statement, visit:
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MAVEN SWIA instrument lead Jasper Halekas on Iowa Public Radio

The MAVEN Solar Wind Ion Analyzer (SWIA) is a part of the spacecraft's Particles and Fields Package. SWIA measures the solar wind and magnetosheath proton flow around #Mars and constrains the nature of solar wind interactions with the upper atmosphere.

+Jasper Halekas, Associate Professor in the Department of Physics and Astronomy at the University of Iowa, talks with Iowa Public Radio's Ben Kieffer about the instrument and how it measures the constant stream of energy from the sun as it bombards Mars' upper atmosphere.

To listen to the full interview, visit: (Jasper's segment covers about the first 15 minutes of the interview).

Learn more about the SWIA instrument, here:
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MAVEN instrument measures escape of particles from Mars' upper atmosphere

#MAVEN’s Suprathermal and Thermal Ion Composition (STATIC) instrument is measuring the composition and energy of ions as the spacecraft passes through various layers of Mars’ upper atmosphere.

The series of graphs presented here shows the composition and energy of ions as the MAVEN spacecraft moved from low (~250 km) to higher (~500 km) altitudes. At the higher altitudes, the ions have been accelerated, as indicated by their higher energy. We are seeing the acceleration from low-energy to higher energy as the ions are driven to escape speeds.

For all the latest released results from the #MAVEN mission, visit:

(Image credit: Jim McFadden/UC Berkeley-Space Sciences Laboratory)
+University of California, Berkeley 
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The USGS releases its highest resolution geologic map of Mars

This new map provides geologic and structural information on layered sedimentary rocks at a scale comparable to what a field geologist would see on Earth, including a precise illustration of a portion of Valles Marineris. The map provides new targets for continued scientific investigation of past potentially habitable environments on #Mars.

The new geologic and structural map uses the highest-resolution, orbiter-based images currently available for Mars—data from the High Resolution Imaging Science Experiment (HiRISE) camera on board the Mars Reconnaissance Orbiter—to illuminate past geological processes in a portion of Valles Marineris. The area analyzed, called western Candor Chasma, is one of the largest canyons in the Valles Marineris canyon system. The resulting map provides the most detailed information of the geology of Mars at a human scale over a broad area of terrain, and is available for download online.

For more information and to download the resulting map, visit:

(Image credit: USGS/NASA/JPL/University of Arizona)
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Yeah it looks like it can support life
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Mars upper atmosphere and ionosphere orbiter
Solving Mars' climate mystery. Where did the water and CO2 go?
  • Mars' Upper Atmosphere
    Orbiter, 2014 - present
    MAVEN is the first mission devoted to exploring Mars' upper atmosphere in an effort to help determine what happened to the once-dense atmosphere and surface water of the Red Planet and solve its climate mystery.
  • Cape Canaveral Air Force Station
    Spacecraft, 2014
    Atmospheric Orbiter
  • Laboratory for Atmospheric and Space Physics
    Spacecraft, 2012
  • NASA - Goddard Space Flight Center, Lockheed Martin Space Systems, University of California at Berkeley, NASA - Jet Propulsion Laboratory
    Spacecraft, 2011
    Climate mystery investigator
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an elliptical orbit around Mars (150 km x 6,200 km)
NASA's Kennedy Space Center - Waterton Canyon, CO
The Mars Atmosphere and Volatile EvolutioN (MAVEN) mission is the first mission devoted to understanding the Martian upper atmosphere. The goal of MAVEN is to determine the role that loss of atmospheric gas to space played in changing the Martian climate through time. Where did the atmosphere – and the water – go?
The Mars Atmosphere and Volatile EvolutioN Mission (MAVEN) launched on Nov. 18, 2013 and entered Mars orbit on Sept. 21, 2014 to begin exploring the planet’s upper atmosphere, ionosphere and interactions with the sun and solar wind.
Bragging rights
The second in NASA's Mars Scout missions, MAVEN will determine how much of the Martian atmosphere has been lost over time by measuring the current rate of escape to space and gathering enough information about the relevant processes to allow extrapolation backward in time.
  • University of Colorado - Boulder
    Astronomy and Aeronomy, 2011
  • University of California, Berkeley
    Space Physics, 2011
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November 18
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Mars Atmosphere and Volatile EvolutioN Mission