30 research outputs found
Discovery of seven volcanic outbursts on Io from an IRTF observation campaign 2016 to 2022
This study analyzes near-infrared measurements of Io, Jupiter's moon,
observed over 170 nights from 2016 to early 2022 using the NASA Infrared
Telescope Facility (IRTF). During this period, seven new volcanic outbursts,
the most energetic volcanic events on Io, were discovered and characterized,
increasing the total number of observed outburst events from 18 to 25. We also
present simplified criteria for the thermal detection of an outburst, requiring
it to be both confined to a specific location of Io and above a threshold
intensity in the Lp-band (3.8 micron).
Our measurements use 2 to 5 micron photometry in eclipse, Jupiter
occultation, and reflected sunlight. In addition to extending the observational
dataset of Io's dynamic activity, these data provide insights into the temporal
and spatial distribution of outbursts on Io. Notably, all seven outbursts were
detected in Io's trailing hemisphere. These include Pillan Patera and a newly
discovered repeating outburst location at Acala Fluctus. We add these events to
the rare category of recurring outbursts, before which Tvashtar was the only
known example. We observed that another outburst at UP 254W decreased in
Lp-band intensity by a factor of two in 4.5 hours. In August 2021, Io exhibited
high volcanic activity when two powerful outbursts rapidly appeared,
propagating East. Our findings underscore IRTF's ongoing contributions to the
study of Io
A Randomized Controlled Trial Comparing the Effects of Counseling and Alarm Device on HAART Adherence and Virologic Outcomes
Michael Chung and colleagues show that intensive early adherence counseling at HAART initiation resulted in sustained, significant impact on adherence and virologic treatment failure, whereas use of an alarm device had no effect
Girls and Boys Born before 28Â Weeks Gestation: Risks of Cognitive, Behavioral, and Neurologic Outcomes at Age 10Â Years
To compare the prevalence of cognitive, neurological, and behavioral outcomes at 10 years of age in 428 girls and 446 boys who were born extremely preterm (EP)
Science overview of the Europa Clipper mission
The goal of NASA’s Europa Clipper mission is to assess the habitability of Jupiter’s moon Europa. After entering Jupiter orbit in 2030, the flight system will collect science data while flying past Europa 49 times at typical closest approach distances of 25–100 km. The mission’s objectives are to investigate Europa’s interior (ice shell and ocean), composition, and geology; the mission will also search for and characterize any current activity including possible plumes. The science objectives will be accomplished with a payload consisting of remote sensing and in-situ instruments. Remote sensing investigations cover the ultraviolet, visible, near infrared, and thermal infrared wavelength ranges of the electromagnetic spectrum, as well as an ice-penetrating radar. In-situ investigations measure the magnetic field, dust grains, neutral gas, and plasma surrounding Europa. Gravity science will be achieved using the telecommunication system, and a radiation monitoring engineering subsystem will provide complementary science data. The flight system is designed to enable all science instruments to operate and gather data simultaneously. Mission planning and operations are guided by scientific requirements and observation strategies, while appropriate updates to the plan will be made tactically as the instruments and Europa are characterized and discoveries emerge. Following collection and validation, all science data will be archived in NASA’s Planetary Data System. Communication, data sharing, and publication policies promote visibility, collaboration, and mutual interdependence across the full Europa Clipper science team, to best achieve the interdisciplinary science necessary to understand Europa
Recommendations for Addressing Priority Io Science in the Next Decade
Io is a priority destination for solar system exploration. The scope and importance of science questions at Io necessitates a broad portfolio of research and analysis, telescopic observations, and planetary missions - including a dedicated New Frontiers class Io mission
The Science Case for Io Exploration
Io is a priority destination for solar system exploration, as it is the best natural laboratory to study the intertwined processes of tidal heating, extreme volcanism, and atmosphere-magnetosphere interactions. Io exploration is relevant to understanding terrestrial worlds (including the early Earth), ocean worlds, and exoplanets across the cosmos
Extremely low gestational age and very low birthweight for gestational age are risk factors for autism spectrum disorder in a large cohort study of 10-year-old children born at 23-27 weeks’ gestation
No prospective cohort study of high-risk children has used rigorous exposure assessment and optimal diagnostic procedures to examine the perinatal antecedents of autism spectrum disorder (ASD), separately among those with and without cognitive impairment