Thomas H. Prettyman retweeted
Replenishment of Near‐Surface Water Ice by Impacts Into Ceres' Volatile‐Rich Crust: Observations by Dawn's Gamma Ray and Neutron Detector agupubs.onlinelibrary.wiley.…
Thomas H. Prettyman retweeted
PRESS RELEASE: buff.ly/2VMawS4
Video: buff.ly/3xCyT1S
Anomalies in the distribution of hydrogen at Occator crater on the dwarf planet #Ceres reveal an icy crust, says a new paper led by @PrettymanTom, a Senior Scientist at the Planetary Science Institute.
Thomas H. Prettyman retweeted
Day 1 in the field for the Operational Readiness Test (ORT)! Zoe is in the house! (Well, in the field.) HERE WE GOOOOOoooooo! @CMU_Robotics @CarnegieMellon @SCSatCMU
Thomas H. Prettyman retweeted
After meeting #MissionToPsyche team members, Psyche Inspired intern & @seattleu student Cameryn was so moved by their contributions that she made them into cookies! See: Lindy Elkins-Tanton, Ravi Prakash, Tom Prettyman, Kristina Larson, Marisol Arenas, & Lindsay McLaurin!
Thomas H. Prettyman retweeted
TREX was to do fieldwork this & next week on Hopi tribe land in northern AZ. #COVID19 stopped that. Native people are being hit hard by the #coronavirus. Please support them in thanks for supporting our @NASA research. We appreciate your donation to them: mightycause.com/story/Hopi-E…
Please support Hopi Foundation Emergency Assistance Fund mtyc.co/6d4l0f via @mightycause
Thomas H. Prettyman retweeted
🚀🛰️💫
Thanks to @ltelkins, who’s leading the #Psyche mission for @NASA, along with her team for stopping by Palo Alto this week. Psyche will travel to an #asteroid using Maxar’s next-generation solar electric propulsion system. Learn more about Psyche: blog.maxar.com/space-infrast…
Thomas H. Prettyman retweeted
Seasonal Polar Temperatures on the Moon doi.org/10.1029/2019JE006028 . The areas that are cold enough to trap water during the winter season are significantly larger than the cold, permanently shadowed regions.
Thomas H. Prettyman retweeted
Relieved to learn that the team is fully prepared to measure the solid angle of approaching giant space jellyfish once @NASAPsyche is in flight. (Brilliant @PrettymanTom making sure people from all backgrounds are up to speed and ready to learn about nuclear spectroscopy.)
Awesome advert for upcoming Asteroid Day events at the New Mexico Museum of Natural History and Science in Albuquerque by Xanthe Miller @NMMNHS @planetarysci @psisykes @NASAPsyche @ltelkins @NASA_Dawn - alibi.com/events/307981/Aste…
Meteoritic iron found practical use as early as the bronze age - Now, BMW is decorating the interior of their cars with iron meteorites... @ltelkins caranddriver.com/news/a25735…
We are celebrating our first award announcements from the EcoChamps contest. We will fund six proposals. You can learn about the EcoChamps program on our website:
ecochamps.org
ECO CHAMPS
prizes for youth who improve and protect the environment
Rocky Flats' transformation to wildlife refuge...
Rocky Flats reopens as wildlife refuge amid concerns about the land’s nuclear past nbcnews.com/nightly-news/vid… via @nbcnews
Thomas H. Prettyman retweeted
My mission has ended—but the science hasn’t. Explorers will study my data for decades to come, while missions like @OSIRISREx, @NASANewHorizons and others will continue their own quests to explore the solar system's other small worlds. Follow @NASASolarSystem for the latest.
Strong force simulation - Scout = neutron; jolly ball = proton; and string represents exchange of mesons. Realistic - except for play bow and neutron biting proton (not shown): flic.kr/p/2b7AkYy @ltelkins @hardgrove @sandiamtswoman @leenuh_hlfernan
Thomas H. Prettyman retweeted
Oh, the places I’ve been. Look back at 11 years of discovery in just 60 seconds. More highlights: dawn.jpl.nasa.gov/mission/to… #DuskforDawn
Don't miss Pluto Palooza at the NM Natural History museum in September! nmnaturalhistory.org/events/…
This western screech appears to be injured and is being harassed by jays. Waiting for hawks aloft rescue...
Thomas H. Prettyman retweeted
The TREX fieldwork team kicked off their meeting in Tucson. Proposal lead @arh_uv and fieldwork lead Eldar Noe. @NASA TREX SSERVI



















