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2016
Hydrogen in Mars’ upper atmosphere comes from water vapor in the lower atmosphere. An atmospheric water molecule can be broken apart by sunlight, releasing the two hydrogen atoms from the oxygen atom that they had been bound to. Several processes at work in Mars’ upper atmosphere may then act on the hydrogen, leading to its escape. (Courtesy NASA/GSFC; University of Colorado/LASP)

MAVEN Observes Ups and Downs of Water Escape from Mars

October 19

After investigating the upper atmosphere of the Red Planet for a full Martian year, MAVEN has determined that escaping water does not always go gently into space.

Sophisticated measurements made by a suite of instruments on the MAVEN spacecraft revealed the ups and downs of hydrogen escape—and therefore water loss. The escape rate peaked when Mars was at its closest point to the sun and dropped off when the planet was farthest from the sun. The rate of loss varied dramatically overall, with 10 times more hydrogen escaping at the maximum.

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iuvs_3

MAVEN Gives Unprecedented Ultraviolet View of Mars

October 17

New global images of Mars from the MAVEN mission show the ultraviolet glow from the Martian atmosphere in unprecedented detail, revealing dynamic, previously invisible behavior. They include the first images of “nightglow” that can be used to show how winds circulate at high altitudes. Additionally, dayside ultraviolet imagery from the spacecraft shows how ozone amounts change over the seasons and how afternoon clouds form over giant Martian volcanoes. The images were taken by the MAVEN Imaging UltraViolet Spectrograph (IUVS).

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MAVEN's Imaging UltraViolet Spectrograph obtained this image of Mars on July 13, 2016, when the planet appeared nearly full when viewed from the highest altitudes in the MAVEN orbit. The ultraviolet colors of the planet have been rendered in false color, to show what we would see with ultraviolet-sensitive eyes. (Courtesy NASA Goddard/LASP)

MAVEN Celebrates One Mars Year of Science

October 3

Today, MAVEN completed one Mars year of science observations. One Mars year is just under two Earth years.

MAVEN launched on Nov. 18, 2013, and went into orbit around Mars on Sept. 21, 2014. During its time at Mars, MAVEN has answered many questions about the Red Planet.

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Solar Wind Strips Martian Atmosphere (Courtesy NASA/GSFC, CU-Boulder/LASP, and University of Iowa)

MAVEN data used for award-winning NASA Scientific Visualization Studio video

May 13

A 3-D animation created by NASA’s Scientific Visualization Studio using data from the MAVEN mission to Mars is the corporate winner of the inaugural Data Stories video contest sponsored by Science magazine for videos that tell stories about data. The video explains how the solar wind is driving particles from the upper atmosphere of Mars into space, which may have caused the planet to dry out and cool over the eons.

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The close encounter between comet Siding Spring and Mars flooded the planet with an invisible tide of charged particles from the comet's coma. The dense inner coma reached the surface of the planet, or nearly so. The comet's powerful magnetic field temporarily merged with, and overwhelmed, the planet's weak field, as shown in this artist's depiction.
(Courtesy NASA Goddard)

Close Comet Flyby Threw Mars’ Magnetic Field Into Chaos

March 9

Just weeks before the historic encounter of comet C/2013 A1 (Siding Spring) with Mars in October 2014, NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft entered orbit around the Red Planet. To protect sensitive equipment aboard MAVEN from possible harm, some instruments were turned off during the flyby; the same was done for other Mars orbiters. But a few instruments, including MAVEN’s magnetometer, remained on, conducting observations from a front-row seat during the comet’s remarkably close flyby.

The one-of-a-kind opportunity gave scientists an intimate view of the havoc that the comet’s passing wreaked on the magnetic environment, or magnetosphere, around Mars. The effect was temporary but profound.

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MAVEN Observes Mars Moon Phobos in the Mid- and Far-Ultraviolet

February 29
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2015

MAVEN Reveals Speed of Solar Wind Stripping Martian Atmosphere

November 5, 2015
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NASA to Announce New Findings on Fate of Mars’ Atmosphere

November 2, 2015
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MAVEN Celebrates One Year at Mars

September 22, 2015
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VIDEO: Mapping Mars’ Upper Atmosphere

September 2, 2015
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MAVEN Results Find Mars Behaving Like a Rock Star

June 20, 2015
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Mars Missions to Pause Commanding in June, Due to Sun

June 3, 2015
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Auroras on Mars

May 14, 2015
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Traffic Around Mars Gets Busy

May 5, 2015
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MAVEN Completes 1,000 Orbits around Mars

April 8, 2015
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MAVEN Detects Aurora and Mysterious Dust Cloud around Mars

March 18, 2015
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MAVEN Completes First Deep Dip Campaign

February 19, 2015
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2014

MAVEN Identifies Links in Chain Leading to Atmospheric Loss

December 15, 2014
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MAVEN Completes Commissioning And Begins Its Primary Science Mission

November 17, 2014
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Newest NASA Mars Orbiter Demonstrates Relay Prowess

November 10, 2014
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Mars Spacecraft Reveal Comet Flyby Effects on Martian Atmosphere

November 7, 2014
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NASA to Discuss Science Findings of Oct. 19 Comet Flyby of Mars

November 5, 2014
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MAVEN Continues Mars Exploration Begun 50 Years Ago by Mariner 4

November 4, 2014
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MAVEN Ultraviolet Image of Comet Siding Spring’s Hydrogen Coma

October 23, 2014
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MAVEN Studies Passing Comet and Its Effects

October 20, 2014
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NASA Reports MAVEN Mission’s First Look at Mars

October 14, 2014
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NASA Shares What MAVEN Spacecraft Has Seen in its First Few Weeks at Mars

October 10, 2014
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NASA Prepares its Science Fleet for Oct. 19 Mars Comet Encounter

October 9, 2014
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MAVEN Spacecraft Returns First Mars Observations

September 24, 2014
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Coronal Mass Ejections at Mars

September 23, 2014
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MAVEN spacecraft enters orbit around Mars

September 22, 2014
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MAVEN Spacecraft Ready for Sept. 21 Orbit Insertion

September 17, 2014
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MAVEN makes final preparations for Mars

September 8, 2014
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MAVEN Solar Wind Ion Analyzer Will Look at Key Player in Mars Atmosphere Loss

May 15, 2014
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MAVEN on Track to Carry Out its Science Mission

February 4, 2014
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2013

Goddard Planetary Instruments Score a Hat Trick

December 6, 2013
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Mission Managers Hail Successful MAVEN Launch

November 19, 2013
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NASA Launches MAVEN to Study Upper Atmosphere of Mars

November 19, 2013
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Mission Manager a Modern Mr. Fix-it

November 16, 2013
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LeVar Burton Shares MAVEN’s Story in a New NASA PSA

November 14, 2013
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MAVEN Seeks to Solve Another Mars Riddle

November 14, 2013
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NASA Video Illustrates MAVEN Mission’s Investigation of a Lost Mars

November 13, 2013
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MAVEN Solar Wind Electron Analyzer Seeks Answers at Microscopic Levels

November 12, 2013
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MAVEN Launch Day Coverage

November 9, 2013
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What MAVEN Would See at Mars on Halloween

October 31, 2013
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NASA Prepares to Launch First Mission to Explore Mars’ Upper Atmosphere

October 28, 2013
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Communications Tests Go the Distance for MAVEN

September 20, 2013
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MAVEN Paces Through Prelaunch Prep

September 6, 2013
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MAVEN Eyes Mars as Launch Preparations Begin

August 9, 2013
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MAVEN haiku selected for travel to Mars

August 8, 2013
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NASA Begins Launch Preparations for Next Mars Mission

August 5, 2013
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MAVEN Spectrometer Opens Window to Red Planet’s Past

July 18, 2013
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Public voting opens on MAVEN haiku contest

July 15, 2013
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MAVEN’s Imaging Ultraviolet Spectrograph May Help Paint Total Atmospheric Picture

June 17, 2013
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MAVEN Student Art Contest Winner Announced

May 20, 2013
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NASA Invites Public to Send Names And Messages to Mars

May 1, 2013
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Final MAVEN Instrument Integrated to Spacecraft

April 3, 2013
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Measuring Mars: The MAVEN Magnetometer

March 26, 2013
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MAVEN invites the public to come aboard

March 15, 2013
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PRESS RELEASE: MAVEN Particles and Fields Package Integrated

March 14, 2013
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PRESS RELEASE: MAVEN Completes Assembly, Begins Environmental Testing

February 8, 2013
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2012

MAVEN Science Community Workshop – Presentations

December 10, 2012
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PRESS RELEASE: Instrument Delivered for NASA’s Upcoming Mars Mission

November 16, 2012
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PRESS RELEASE: Next Mars Mission Enters Final Phase Before Launch

September 11, 2012
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MAVEN Profiles: Carlos Gomez-Rosa

May 30, 2012
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PRESS RELEASE: NASA Goddard Delivers MAVEN Magnetometers

May 21, 2012
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MAVEN Profiles: Sandra Cauffman

April 26, 2012
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PHOTO RELEASE: NASA’s MAVEN Spacecraft and Propellant Tank at Lockheed Martin

April 16, 2012
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A stressful test

February 27, 2012
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2011

MAVEN team members bring mission science to rural West Virginia students

December 12, 2011
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New NASA Missions to Investigate How Mars Turned Hostile

November 18, 2011
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PRESS RELEASE: MAVEN Mission Primary Structure Complete

September 26, 2011
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PRESS RELEASE: LASP-led mission to Mars achieves major milestone

July 22, 2011
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2010

PRESS RELEASE: NASA Awards Launch Services Contract for MAVEN Mission

October 21, 2010
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PRESS RELEASE: NASA gives LASP-led Mars mission green light

October 5, 2010
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MAVEN mission to investigate how sun steals Martian atmosphere

October 5, 2010
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2008

NASA selects CU-Boulder to lead $485 million Mars mission

September 15, 2008
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NASA selects MAVEN mission to study Mars atmosphere

September 15, 2008
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