MAVEN Magnetic Fields wrap around Mars (with ghosting)
The sequence of these magnetic fields shown here illustrates that magnetic fields are forced to wrap around the plant by currents induced in Mars’ ionosphere. All the fields (except one) are shown as semi-transparent to emphasize the fact that they all represent a single magnetic field configuration. The calculated MAVEN magnetic field is not time-varying, but this sequence illustrates how solar wind magnetic fields are changed as they move past Mars. The direction of the solar wind emanating from the sun is represented by a yellow arrow. Unlike the Earth, Mars lacks a global magnetic dipole. Because its upper atmosphere is ionized by solar X-rays and extreme ultraviolet (EUV) radiations, the ionosphere of Mars presents a highly conductive obstacle to the flow of the magnetized solar wind plasma. The resulting interaction induces electric currents in the ionosphere which, in turn, create sufficient magnetic pressure to slow and deflect the solar wind around the bulk of the ionosphere, forming an induced magnetosphere. NASA scientists used magnetic field measurements from the Mars Atmosphere and Volatiles EvolutioN (MAVEN) orbiter to make the first quantitative global map of the induced currents that shape the Martian induced magnetosphere. In doing so they found strong asymmetries between the north-south electric-polar hemispheres, particularly in the concentration of sunward currents, an electric connection between the planet's ionosphere and its bow shock, as well as a twist in the global near-Mars current system. Mapping the currents reveals how the solar wind's energy transfers into the induced magnetosphere where it powers escape of the Martian atmosphere. Visualizers: Cindy Starr (lead), Horace Mitchell, Tom Bridgman For more information or to download this public domain video, go to https://svs.gsfc.nasa.gov/4730#26017
MAVEN Explores Mars to Understand Radio Interference at Earth
NASA’s MAVEN (Mars Atmosphere and Volatile EvolutioN) spacecraft has discovered “layers” and “rifts” in the electrically charged part of the upper atmosphere (the ionosphere) of Mars. The phenomenon is very common at Earth and causes unpredictable disruptions to radio communications. However, we do not fully understand them because they form at altitudes that are very difficult to explore at Earth. The unexpected discovery by MAVEN shows that Mars is a unique laboratory to explore and better understand this highly disruptive phenomenon. Credits: NASA's Goddard Space Flight Center James Tralie (ADNET): Lead Producer, Lead Editor, Narrator
Bailee DesRocher (USRA): Lead Animator
Michael Lentz (USRA): Art Director
Jonathan North (USRA): Animator
Krystofer Kim (USRA): Animator
Jacquelyn DeMink (USRA): Animator
Bruce Jakosky (LASP): Scientist
Glyn Collinson (Catholic University of America): Scientist
Aaron E. Lepsch (ADNET): Technical Support Music from Universal Production Music. Songs include: "Alpha and Omega," "Break the News," and "Waiting for a Sensation."
MAVEN Explores Mars to Understand Radio Interference at Earth
NASA’s MAVEN (Mars Atmosphere and Volatile Evolution) spacecraft has discovered “layers” and “rifts” in the electrically charged part of the upper atmosphere (the ionosphere) of Mars. The phenomenon is very common at Earth and causes unpredictable disruptions to radio communications. However, we do not fully understand them because they form at altitudes that are very difficult to explore at Earth. The unexpected discovery by MAVEN shows that Mars is a unique laboratory to explore and better understand this highly disruptive phenomenon. Read more: https://www.nasa.gov/press-release/goddard/2020/mars-layers-and-rifts/ Music from Universal Production Music. Songs include: "Alpha and Omega," "Break the News" and "Waiting for a Sensation" Video credit: NASA's Goddard Space Flight Center James Tralie (ADNET):
Narrator Bailee DesRocher (USRA):
Lead Animator Michael Lentz (USRA):
Art Director Jonathan North (USRA):
Animator Krystofer Kim (USRA):
Animator Jacquelyn DeMink (USRA):
Animator Bruce Jakosky (LASP):
Scientist Glyn Collinson (Catholic University of America):
Scientist Aaron E. Lepsch (ADNET):
Technical Support This video is public domain and along with other supporting visualizations can be downloaded from NASA Goddard's Scientific Visualization Studio at: https://svs.gsfc.nasa.gov/13342 If you liked this video, subscribe to the NASA Goddard YouTube channel: https://www.youtube.com/NASAGoddard Follow NASA’s Goddard Space Flight Center
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Proton Auroras on Mars Captured by MAVEN Spacecraft
NASA's Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft's UltraViolet Spectrograph instrument captured imagery of the Martian proton auroras. Full Story on Live Science: https://www.livescience.com/martian-proton-auroras.html Credit: Live Science / produced & edited by Steve Spaleta (http://www.twitter.com/stevespaleta)
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OTD in Space - Nov. 18: NASA Launches MAVEN to Mars
On November 18, 2013, NASA launched the MAVEN spacecraft to Mars. The name MAVEN stands for Mars Atmosphere and Volatile EvolutioN. The spacecraft is an orbiter designed to help scientists figure out what happened to Mars' water and its atmosphere. Mars is dry today, but it data from several Mars missions suggest that it was a much wetter environment a long time ago. MAVEN is tracking the rate of atmospheric loss from Mars. The planet has a super thin atmosphere that has been leaking into space for a few billion years. Scientists think that when Mars lost its atmosphere, water dried up on the surface as a result. Solar storms that blast radiation into the solar system appear to have blasted away some of the atmosphere. Carbon dioxide in the atmosphere once kept Mars warm enough to sustain water, and losing that greenhouse gas turned Mars into a cold and dry place. MAVEN's science mission ended in 2016, but the spacecraft is still used to relay communications with other missions on Mars.
An Overview of a Solar Storm at Mars
In September 2017, some of strongest solar activity of Solar Cycle 24 impacted Mars. This was the largest space weather event observed at Mars simultaneously in orbit by MAVEN and Mars Express, and at the surface by the Mars Science Laboratory. In this MAVEN outreach webinar from September 19, 2018, Dr. Christina O. Lee of the Space Sciences Laboratory at UC Berkeley describes how the solar eruptive activity impacted the space environment around Mars, including its atmosphere and the radiation environment at the surface. Access this and all previous MAVEN outreach webinars, here:
Closest Supernova Seen Turns 30; NASA's MAVEN Almost Hits Phobos; Update on TESS Launch | SFN #197
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The Sun's Influence on Planetary Atmospheres
As the primary source of energy in the solar system, the Sun is the driver for most of the processes in planetary atmospheres. Variability in solar output both directly and indirectly causes variability in atmospheres, but how and how much depends on the particularities of the planet itself. Since its arrival at the red planet in late 2014, the MAVEN mission has been measuring how Mars’ atmosphere responds to solar variability with the goal of understanding how the climate has changed over the age of the planet. In this MAVEN outreach webinar from Feb. 15, 2017, Dr. Frank Eparvier from the University of Colorado Boulder’s Laboratory for Atmospheric & Space Physics (LASP) and instrument lead for MAVEN’s Extreme Ultraviolet (EUV) monitor discusses the Sun’s influence on the upper atmospheres of Mars and other planets.
The Air On Mars Has A Mysterious Glow. Here's Why
New ultraviolet images from NASA show that Mars' atmosphere lights up at night! What is a nightglow and what causes it? Can The Earth Run Out Of Oxygen? - https://youtu.be/CUR1t2lwdB0
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New View of Mars Reveals Ghostly Ultraviolet Glow
"Mars in ultraviolet light is a wondrous place. By night, the dark side of the planet is aglow with nitric oxide. By day, clouds quickly merge together into banks that stretch 1,000 miles long." Gorgeous Mars 'Nightglow' Spotted by NASA Orbiter
"The first detailed look at Martian "nightglow" has been revealed, thanks to the work of NASA's newest Red Planet orbiter. The space agency's Mars Atmosphere and Volatile Evolution (MAVEN) probe took global pictures of the Red Planet in ultraviolet (UV) light, revealing how winds flow at high altitudes." MAVEN Mission Overview
"The Mars Atmosphere and Volatile EvolutioN (MAVEN) mission is part of NASA's Mars Scout program, funded by NASA Headquarters. Launched in Nov. 2013, the mission will explore the Red Planet's upper atmosphere, ionosphere and interactions with the sun and solar wind." ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos daily. Watch More DNews on Seeker http://www.seeker.com/show/dnews/ Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel Seeker on Twitter http://twitter.com/seeker Trace Dominguez on Twitter https://twitter.com/tracedominguez DNews on Facebook https://facebook.com/DiscoveryNews DNews on Google+ https://plus.google.com/u/0/+dnews Seeker http://www.seeker.com/ Sign Up For The Seeker Newsletter Here: http://bit.ly/1UO1PxI
The MAVEN Mission and Mars’ Auroras
The NASA MAVEN mission has been studying Mars’ climate evolution since September 2014, particularly the loss of its atmosphere to space due to interactions with the sun and the solar wind. Among its discoveries, MAVEN has observed auroras in unexpected locations in the Martian atmosphere. In this Nov. 30, 2016 webinar, Dr. Nick Schneider from the University of Colorado Boulder's Laboratory for Atmospheric and Space Physics (LASP) and lead scientist for MAVEN’s Imaging Ultraviolet Spectrograph discusses MAVEN’s discoveries and the different types of auroras on Mars.
Maven's Mission To Mars
Mars Atmosphere and Volatile Evolution Mission is a space probe developed by NASA designed to study the Martian atmosphere while orbiting Mars. Credit: NASA Follow Us:
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MAVEN | Ultraviolet Mars Reveals Cloud Formation
Images from MAVEN's Imaging UltraViolet Spectrograph (IUVS) were used to make this movie of rapid cloud formation on Mars on July 9-10, 2016. The ultraviolet colors of the planet have been rendered in false color, to show what we would see with ultraviolet-sensitive eyes. The movie uses four MAVEN images to show about 7 hours of Mars rotation during this period, and interleaves simulated views that would be seen between the four images. Mars' day is similar to Earth’s, so the movie shows just over a quarter day. The left part of the planet is in morning and the right side in afternoon. Mars’ prominent volcanoes, topped with white clouds, can be seen moving across the disk. Mars’ tallest volcano, Olympus Mons, appears as a prominent dark region near the top of the images, with a small white cloud at the summit that grows during the day. Olympus Mons appears dark because the volcano rises up above much of the hazy atmosphere which makes the rest of the planet appear lighter. Three more volcanoes appear in a diagonal row, with their cloud cover merging to span up to a thousand miles by the end of the day. These images are particularly interesting because they show how rapidly and extensively the clouds topping the volcanoes form in the afternoon. Similar processes occur at Earth, with the flow of winds over mountains creating clouds. Afternoon cloud formation is a common occurrence in the American West, especially during the summer. (Video credits: NASA/MAVEN/University of Colorado-LASP)
The History of Water on Mars: Implications for Future Exploration
There is ample evidence that Mars once had liquid water on its surface; Mars missions are studying how much water was present and where it went. In this presentation from September 28, 2016, Dr. Patricia Craig from the Lunar and Planetary Institute, a scientist with the Mars Curiosity rover, discusses the evidence for liquid water on Mars from a historical perspective and how past, present, and future missions to Mars are enabling us to decipher the role that water has played and will play in the future of Mars exploration.
Magnetic Fields, Planets, and Comets
Magnetic fields fill space. The solar wind flows out from the Sun and carries a remnant of the Sun's magnetic field out into interplanetary space. This interplanetary magnetic field interacts with all the objects in the Solar System. Some of these objects (like Earth or Jupiter) have their own permanent, intrinsic planetary-sized magnetic fields. These interactions create magnetospheres—regions of space around an object that are dominated by the object's interaction with the solar wind. Other objects (like Mars, Venus, and comets) lack intrinsic permanent magnetic fields but do have atmospheres which can be ionized. When these ionospheres interact with the solar wind, magnetic fields are induced in the ionospheres and the interactions become induced magnetospheres. In this presentation from April 27, 2016, Jared Espley, from NASA Goddard's Laboratory for Planetary Magnetospheres, discusses the Martian induced magnetosphere (and how it's even more complicated due to strong crustal magnetic fields). He also discusses how the plasma from Comet Siding Spring temporarily disrupted the Martian magnetosphere when the comet enveloped Mars in 2014.
MAVEN | Martian Atmosphere Loss Explained
Scientists have long suspected the solar wind of stripping the Martian atmosphere into space, a process that may have turned Mars from a blue world early in its history into the red planet that we see today. In 2014, NASA's MAVEN orbiter arrived at Mars and began studying its upper atmosphere. Now, MAVEN has returned the first-ever measurements of solar wind erosion at Mars, observing ions in the upper atmosphere as they pick up energy from the electric field of the solar wind and escape to space. (Video credit: NASA's Goddard Space Flight Center)
MAVEN Results: IUVS and detecting aurora on Mars
The MAVEN mission’s IUVS instrument made unprecedented observations of aurora on Mars. Join Dr. Sonal Jain from the Laboratory for Atmospheric and Space Physics (LASP) to discuss the instrument, the results, and their implication about how the solar wind interacts with Mars.
The Earth’s Dynamo: Generating a Global Magnetic Field
Earth’s atmosphere is protected by a global magnetic field. How does our planet generate its magnetic field, and why doesn’t Mars have one? In this presentation from Jan. 27, 2016, Ian Rose from UC Berkeley shares the story of the Earth’s interior, as well as the internal structures of other planets in our solar system, and answers questions from the webinar participants.
MAVEN | Exploring Mars' Climate History
Ancient regions on Mars bear signs of abundant water—such as features resembling valleys and deltas, and minerals that only form in the presence of liquid water. Scientists think that billions of years ago, the atmosphere of Mars was much denser and warm enough to form rivers, lakes, and perhaps even oceans of water. As the planet cooled and lost its global magnetic field, the solar wind and solar storms eroded away to space a significant amount of the planet’s atmosphere, turning Mars into the cold, arid desert we see today. This animation depicts the transition of Mars over billions of years. The goal of MAVEN is to determine how much of Mars’ atmosphere and water have been lost to space, and how these processes have changed the climate on the Red Planet over its history. (Video credit: The Lunar and Planetary Institute/MAVEN) http://twitter.com/maven2mars
Blowin' in the Wind: First Results from MAVEN
The MAVEN mission has identified the process that appears to have played a key role in the transition of the Martian climate from an early, warm and wet environment that might have supported surface life to the cold, arid planet Mars is today. In this presentation, MAVEN team scientist Jasper Halekas describes the MAVEN results being published about how solar wind and energetic events are transforming Mars.
Exploring Mars: The Inside Story
October 28, 2015 - MAVEN Educator Community of Practice webinar What do the geological features on Mars’ surface tell us about its interior? How does Mars’ tectonic activity compare with Earth’s history of plate tectonics? How are these related to planetary magnetic fields? Addressing these questions and more is Dr. Walter Kiefer of the Lunar and Planetary Institute, who uses computer modeling of flows inside of planets to study the volcanic structures and the thermal evolution of Mars, the Moon, and Venus.