Outward migration of low-mass planets has recently been shown to be a possibility in non-barotropic disks. We examine the consequences of this result in evolutionary models of protoplanetary disks. Planet migration occurs towards equilibrium radii...
Recently, Goodman et al. (2014) argued that the very long, very thin infrared dark cloud "Nessie" lies directly in the Galactic mid-plane and runs along the Scutum-Centaurus arm in position-position-velocity ($p-p-v$) space as traced by lower density...
A \textit{$k$-transversal} to family of sets in $\mathbb{R}^d$ is a $k$-dimensional affine subspace that intersects each set of the family. In 1957 Hadwiger provided a necessary and sufficient condition for a family of pairwise disjoint, planar conve...
The periodic eclipses of the pre-main-sequence binary, KH 15D, have been explained by a circumbinary dust ring inclined to the orbital plane, which causes occultations of the stars as they pass behind the ring edge. We compute the extinction and fo...
May 23, 2025 · Devin, launched by Cognition Labs, became the world’s first fully autonomous AI software engineer — capable not just of writing code, but of planning, debugging, running entire …
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This paper reports experiences with iterated traffic microsimulations in the context of a Dallas study. ``Iterated microsimulations'' here means that the information generated by a microsimulation is fed back into the route planner so that the simu...
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The prime Kepler mission detected 34,032 transit-like signals, out of which 8,054 were identified as likely due to astrophysical planet transits or eclipsing binaries. We manually examined 306 of the remaining 25,978 detections, and found six plausib...
Previously we have shown that three-dimensional concepts are more readily learned in a three-dimensional context. Although VR headsets are growing in popularity, they only provide a quite limited field of view, and each person in a group may be viewi...
apparition after our current comet show, Comets and Discovery" (PDF). Abrams Planetarium. Archived (PDF) from the original on 16 May 2024. Retrieved 9 July 2024
We describe the scientific motivations, the mission concept and the instrumentation of SPACE, a class-M mission proposed for concept study at the first call of the ESA Cosmic-Vision 2015-2025 planning cycle. SPACE aims to produce the largest three-...
Cultural Astronomy sits at the intersection of our study of the universe and the human experience, exploring how we observe the stars, interpret their motions, and incorporate them into our perspectives of the nature of reality. "Astronomy in Appalac...
Indigenous people have nurtured critical relationships with the stars, from keen observation and sustainable engineering to place-based ceremony, navigation, and celestial architecture for tens of thousands of years. The Indigenous relationship and k...
This White Paper on Heavy Ion Physics at the LHC was presented at the Town Meeting at Brookhaven National Laboratory, Jan. 21-23, 2001, and made available to NSAC to aid in the long range planning process....
May 26, 2025 · Five future infrastructure scenarios and why bold, resilient and sustainable planning is essential to meet climate, economic and societal demands.
Jan 8, 2026 · Plan your Route 66 Road Trip with our online Travel Guide. Learn all about its attractions, top sights, landmarks, what to see and do, and where to stay. How to hire a car and book your hotel. …
Dec 10, 2025 · This Shenzhen travel guide will walk you through everything you need to know about the city: from its history and culture, to where to eat, shop, explore, and even how to plan a weekend …