Dynamic Response of the Environments at Asteroids, the Moon, and moons of Mars

Goddard's DREAM2 Center for Space Environments


DREAM2 incorporates over 30 science investigators from over 10 academic Institutions to study the space environment at exploration targets. DREAM2 is:

  • A theory, modeling, data analysis research team examining the space environment at airless bodies
  • Answering "How does the space environment affect volatiles, exospheres, plasmas, surface micro-structure, and visiting human systems at any exposed rocky body?"
  • Emphasizing the dynamic solar storms and human interactions at airless bodies.
  • A modeling center that maintains, advances, and integrates state-of-the-art neutral, plasma, radiation, and surface interaction models
  • Sponsored by Solar System Exploration Research Institute (SSERVI) Headquartered out of Ames Research Center Moffett Field CA, 94035

 

DREAM2 NEWS



New DREAM2 study finds solar storms could create discharges at the Moon’s poles
January 9 2017



image of moon indicating areas of anomalous charge build up

A team led by University of New Hampshire's Andrew Jordan has been examining the possibility of occurrence of deep dielectric discharge (DDD) in lunar polar regions from energetic particles associated with solar storms. They found that the cold lunar regolith at the lunar poles behaves as an insulator to allow anomalous charge build up during energetic particle events. A press release on their findings is found at
https://www.nasa.gov/feature/goddard/2017/solar-storms-charge-lunar-soil


DREAM2 team members identify lunar 'sonic booms'
December 29 2016



image of the Earth's moon with a satellite in front of it.

As part of his ARTEMIS and DREAM2 research, Jasper Halekas reports on the development of collisionless shocks in the space plasma near lunar magnetic anomaly regions. These shocks form due to the supersonic solar wind colliding with magnetic anomaly regions. The work was presented at the recent AGU and a web article is found at
https://now.uiowa.edu/2016/12/lunar-sonic-booms


DREAM2 intern Keenan Hunt-Stone wins SPS award
November 14 2016



Howard Unjiversity logo

Howard University’s Keenan Hunt-Stone was one of a select few students to receive an award for his poster from the Society of Physics Students (SPS) at PhysCon 2016 held in San Francisco, CA, on November 2–6. His poster entitled “Constraining Lunar Surface Charging with Apollo CPLEE Observations” described research performed as a summer intern with mentor Tim Stubbs, with the research supported by the DREAM2’s intern program. Congratulations to Keenan!

For more details, see
http://www.sigmapisigma.org/sigmapisigma/congress/2016/poster-presentations


DREAM2 makes a set of presentations at LEAG
November 7 2016



LEAG_2016_logo

The annual meeting of the Lunar Exploration Analysis Group (LEAG) was held last week from 11/1-3 in Columbia Maryland. DREAM2 team members made a number of presentation including mission reports, new findings on the lunar regolith, and descriptions of exciting new upcoming missions like Resource Prospector and Lunar Ice Cube. The program and associated presentations can be found at

http://www.hou.usra.edu/meetings/leag2016/pdf/program.pdf


SSERVI Director Seminar: Dana Hurley presents an overview of Lunar Polar Volatiles
September 27 2016



SSERVI logo

Earlier this month, DREAM2 Co-I Dana Hurley presented a terrific review of the current state of knowledge of water at the lunar poles. The presentation was made at NASA HQ as part of the SSERVI Director’s Seminar series. Both a recording of the talk and the slide set can be found at

https://sservi.nasa.gov/event/sservi-directors-seminar-featuring-dana-m-hurley/


NewScientist magazine features DREAM2 study of Deep Dielectric Discharge at the Moon
September 20 2016



crater on Earth's moon

DREAM2 co-i Andrew Jordan is featured in a New Scientist article discussing the effect of radiation-induced deep dielectric discharge on the regolith at the cold lunar poles. He was the lead of a study team to understand the phenomena and their results were recently published in Icarus. For more details, on the NewScientist article, see

https://www.newscientist.com/article/2105423-tiny-lightning-bolt-explosions-can-vaporise-the-moons-thin-soil/

The Icarus research article is at

http://www.sciencedirect.com/science/article/pii/S0019103516305358


OSIRIS-REx launches to asteroid Bennu
September 9 2016



OSIRIS-REx launch

Congratulations to the O-REx team for a successful and spectacular evening launch (see http://spaceref.com/osiris-rex/osiris-rex-speeds-toward-asteroid-rendezvous.html). Congrats especially to our DREAM2 co-i and collaborating team members who are part of the O-REx adventure: John Marshall, Lucy Lim, and Joe Nuth. Congratulations also to members of our DREAM2 E/PO team Lora Bleacher and Andrea Jones who supported the terrific public communications efforts.


DREAM2 investigators examine super-charged lunar soils
September 7 2016



news image for September 7 news

DREAM2 co-I Mike Zimmerman at APL recently lead a simulation study of lunar surface dust regolith charging in plasma and in sunlight – showing the development of inhomogeneous grain charging and the formation of large E-fields between grains. Zimmerman’s research team included members of SSERVI’s DREAM2, IMPACT, and VOTICES teams. The paper was recently accepted and is now in press in Journal of Geophysical Research.

See http://onlinelibrary.wiley.com/doi/10.1002/2016JE005049/full


DREAM2 Intern Ana Newheart wins award in NASA’s Exploration Science Forum Student Poster Contest
August 02 2016



Ana Newhart with award

DREAM2 intern Ana Newheart won a travel award for her poster 'Apollo ALSEP/SIDE Observations of Stairstep Flux Profiles in the Terrestrial Magnetotail'. She works with mentor Michael Collier on analysis of data from the Suprathermal Ion Detector Experiment (SIDE) deployed and left on the Moon by Apollo astronauts. It remains a unique data set - paying terrific dividends to the next generation of explorers. Congratulations Ana!

See http://sservi.nasa.gov/articles/esf-2016-student-poster-award-winners/


DREAM2 prepares for the NASA Exploration Science Forum
July 14 2016



SSERVi Exploration Science Forum logo

DREAM2 team members are preparing for the annual Exploration Science Forum held at NASA Ames Research Center from July 20-22 and the preceding 3rd Conference on the Exploration of Phobos and Deimos on July 18-19. The programs for each are accessible from the ESF home page at http://nesf2016.arc.nasa.gov. DREAM2 has numerous presentations in both conferences.


DREAM2 Phobos study is May’s JGR-Planets Cover
June 22, 2016



JGR Cover image

DREAM2 Co-I Andrew Poppe at UC Berkeley led a team in examining plasma sputtering at Phobos, and modeling the resulting neutral gas emission and associated pick-up ions. Their recent paper can be found at

http://onlinelibrary.wiley.com/doi/10.1002/2015JE004948/full

Key figures showing the distribution of pick-up ions from the moon at Mars made the cover of Journal Geophysical Research- Planets. See

http://onlinelibrary.wiley.com/doi/10.1002/jgre.20434/epdf


DREAM2 team has its SSERVI-Central Site Visit
May 11, 2016



DREAM2 team

On May 3, the DREAM2 team had a site visit from the SSERVI Director, Dr. Yvonne Pendleton, and included key members of the other 8 SSERVI teams. At the site visit, the DREAM2 theme core leads presented the latest research and there were special talks on the recent Phobos environment studies, radiation dose effect calculations, CCMC modeling work, and astronaut-regolith first contact models.


DREAM2 & LRO research gives new insights into how the Moon got 'inked'
May 6, 2016




Moon

A powerful combination of observations and computer simulations is giving new clues to how the moon got its mysterious "tattoos" -- swirling patterns of light and dark found at over a hundred locations across the lunar surface.

For more information see:
http://www.nasa.gov/feature/goddard/2016/lunar-swirls


DREAM2 Team Members at Upcoming Public Outreach Events
April 18, 2016



DREAM2 team members will be on hand at Earth Day festivities at Union Station in DC on April 20-21 from 9:30am-5:00pm to talk with the public about how NASA scientists are exploring and studying Earth’s neighborhood (http://www.earthday.org/campaigns/education/earth-day-union-station/). Team members will also share information about the Moon and other objects in our solar system at the annual Planet Walk on the Baltimore to Annapolis Trail on May 7th from 10:00am-2:30pm (http://www.friendsofaatrails.org/planet_walk.htm). The public is invited to attend both of these free events!


DREAM2Explore Teacher Professional Development Workshop– Registration Now Open!
February 26, 2016



July 11–15
NASA’s Goddard Space Flight Center

DREAM2 is hosting a free workshop for grade 6–9 science teachers. Participants will learn how our understanding of the Moon, asteroids, and the moons of Mars is growing and changing with new data and models from current and recent planetary missions and the work of the DREAM2 team. Teachers will meet with NASA scientists that study the dynamic environments surrounding these rocky objects. All pre-service and in-service grade 6–9 science teachers are encouraged to apply! More information about the workshop and a link to the applications are available here:

http://ssed.gsfc.nasa.gov/dream/DREAM/DREAM2Explore.html.


DREAM2 study featured on the cover of JGR
February 11, 2016



Stunning visuals, showing a reflected ion fountain from the anomaly, graced the June 2015 journal cover

Results from a study led by DREAM2 postdoc Shahab Fatemi at UC Berkeley were published in Journal of Geophysical Research – Space Physics. The team modeled the solar wind plasma interaction with the Moons’ Gerasimovich magnetic anomaly using a state-of-the-art plasma simulation. The stunning visuals, showing a reflected ion fountain from the anomaly, graced the June 2015 journal cover. Congratulations to Shahab and his team!

The paper can be downloaded at:
http://onlinelibrary.wiley.com/doi/10.1002/2015JA021027/full.


DREAM2 Submits its Annual Report to SSERVI
February 10, 2016



image of a spacecraft near an asteroid

DREAM2’s Program Year 2 produced a set of terrific new results on topics like deep dielectric discharge, roving in shadowed regions, the generation of a possible neutral gas torus from Phobos and more. The team also included an outstanding set of early career interns and students from our partnering institutions. Read all about it at

http://ssed.gsfc.nasa.gov/dream/docs/DREAM2_Annual_Report_Program_Year.020116.pdf.


DREAM2 Co-I Hurley leads team in assessing Lunar Polar Volatiles
February 02, 2016



lunar crater

Based on a request by HEOMD leadership, DREAM2’s Dana Hurley led a team from SSERVI and the Friends of Lunar Volatiles in generating a white paper describing the existing observations of the polar volatile environment at the Moon. The white paper was submitted in mid-January of 2016 and can be found at

http://ssed.gsfc.nasa.gov/dream/docs/PolarVolatiles_HEOMD_Hurley.pdf.


DREAM2 co-I Misra wins NASA Early Opportunity Program Award
January 20, 2016



Howard University logo

A new Howard University and UMBC program will provide an early career pathway for underrepresented minority and women STEM students. The effort will focus on exposing six selected Howard University freshmen to NASA-centric research in Astrophysics, Solar System Exploration, Heliophysics and Earth Sciences throughout their undergraduate tenure. The six Howard University students will be stationed full-time at Goddard (some are anticipated to become part of DREAM2) during the three summers they are funded by this project. Dr. Misra is the PI of this new effort.

Read more...



2015 DREAM News
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