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Near-Earth small-body mission targets 162173 Ryugu, 101955 Bennu, and 25143 Itokawa produce gravity fields around 4 orders of magnitude below that of Earth and their irregular shapes, combined with rotational effects produce varying surface…

天体物理仪器与方法 · 物理学 2019-10-11 Stephen R. Schwartz , Jekan Thangavelautham , Erik Asphaug , Aman Chandra , Ravi teja Nallapu , Leonard Vance

We advocate a low-cost strategy for long-duration research into the 'milligravity' environment of asteroids, comets and small moons, where surface gravity is a vector field typically less than 1/1000 the gravity of Earth. Unlike the…

Exploration of asteroids and small-bodies can provide valuable insight into the origins of the solar system, into the origins of Earth and the origins of the building blocks of life. However, the low-gravity and unknown surface conditions…

系统与控制 · 计算机科学 2017-02-01 Raviteja Nallapu , Saumil Shah , Erik Asphaug , Jekan Thangavelautham

Porosity is a key characteristic of the regolith on the surface of small bodies. The porosity of the regolith on the surface of asteroids is changed by applied pressure, and the relationship between pressure and porosity depends on the…

地球与行星天体物理 · 物理学 2017-10-04 Tomomi Omura , masato Kiuchi , Carsten Güttler , Akiko M. Nakamura

High-altitude balloon experiments are becoming very popular among universities and research institutes as they can be used for testing instruments eventually intended for space, and for simple astronomical observations of Solar System…

The regolith-covered surfaces of asteroids preserve records of geophysical processes that have occurred both at their surfaces and sometimes also in their interiors. As a result of the unique micro-gravity environment that these bodies…

地球与行星天体物理 · 物理学 2016-08-31 Naomi Murdoch , Paul Sanchez , Stephen R. Schwartz , Hideaki Miyamoto

The dusty regolith covering the surfaces of asteroids and planetary satellites differs in size, shape, and composition from terrestrial soil particles and is subject to very different environmental conditions. Experimental studies of the…

地球与行星天体物理 · 物理学 2018-10-04 Julie Brisset , Joshua E. Colwell , Adrienne Dove , Sumayya Abukhalil , Christopher Cox , Nadia Mohammed

CubeSats have the potential to expand astrophysical discovery space, complementing ground-based electromagnetic and gravitational-wave observatories. The CubeSat design specifications help streamline delivery of instrument payloads to…

天体物理仪器与方法 · 物理学 2019-12-03 Ewan S. Douglas , Kerri L. Cahoy , Mary Knapp , Rachel E. Morgan

There are thousands of asteroids in near-Earth space and millions in the Main Belt. They are diverse in physical properties and composition and are time capsules of the early solar system. This makes them strategic locations for planetary…

机器人学 · 计算机科学 2018-01-30 H. Kalita , S. Schwartz , E. Asphaug , J. Thangavelautham

We have performed an initial stage conceptual design study for the Deep Interior Scanning CubeSat (DISCUS), a tandem 6U CubeSat carrying a bistatic radar as main payload. DISCUS will be operated either as an independent mission or…

地球与行星天体物理 · 物理学 2018-12-05 Patrick Bambach , Jakob Deller , Esa Vilenius , Sampsa Pursiainen , Mika Takala , Hans Martin Braun , Harald Lentz , Manfred Wittig

AcubeSAT is an open-source CubeSat mission aiming to explore the effects of microgravity and radiation on eukaryotic cells using a compact microfluidic lab-on-a-chip platform. It is developed by SpaceDot, a volunteer, interdisciplinary…

CubeSats are small satellites used for scientific experiments because they cost less than full sized satellites. Each CubeSat uses an on-board computer. The on-board computer performs sensor measurements, data processing, and CubeSat…

空间物理 · 物理学 2022-11-07 Brosnan Yuen , Mihai Sima

Space observatories for gravitational radiation such as LISA are equipped with dedicated on-board instrumentation capable of measuring magnetic fields with low-noise conditions at millihertz frequencies. The reason is that the core…

天体物理仪器与方法 · 物理学 2018-06-18 Ignacio Mateos , Rubén Sánchez-Mínguez , Juan Ramos-Castro

CubeSats are small satellites built in standard sizes and form factors, which have been growing in popularity but have thus far been largely ignored within the field of astronomy. When deployed as space-based telescopes, they enable science…

天体物理仪器与方法 · 物理学 2018-09-05 Evgenya L. Shkolnik

Near Earth Asteroids (NEAs) are thought to contain a wealth of resources, including water, iron, titanium, nickel, platinum and silicates. Future space missions that can exploit these resources by performing In-Situ Resource Utilization…

系统与控制 · 计算机科学 2017-02-22 Ravi teja Nallapu , Erik Asphaug , Jekan Thangavelautham

In situ observations of small asteroids show that surfaces covered by boulders and coarse terrain are frequent on such bodies. Regolith grain sizes have distributions on approximately mm and cm scales, and the behavior of such large grains…

地球与行星天体物理 · 物理学 2020-10-28 J. Brisset , C. Cox , S. Anderson , J. Hatchitt , A. Madison , M. Mendonca , A. Partida , D. Remie

Today there are numerous studies on asteroid mining. They elaborate on selecting the right objects, prospecting missions, potential asteroid redirection, and the mining process itself. For economic reasons, most studies focus on mining…

地球与行星天体物理 · 物理学 2018-12-27 Thomas I. Maindl , Roman Miksch , Birgit Loibnegger

After many years of flying in space primarily for educational purposes, CubeSats - tiny satellites with form factors corresponding to arrangements of "1U" units, or cubes, each 10 cm on a side - have come into their own as valuable…

天体物理仪器与方法 · 物理学 2023-04-05 Peter F. Bloser , David Murphy , Fabrizio Fiore , Jeremy Perkins

Exploration of asteroids and comets can give insight into the origins of the solar system and can be instrumental in planetary defence and in-situ resource utilization (ISRU). Asteroids, due to their low gravity are a challenging target for…

机器人学 · 计算机科学 2017-09-12 Himangshu Kalita , Erik Asphaug , Stephen Schwartz , Jekanthan Thangavelautham

The science and origins of asteroids is deemed high priority in the Planetary Science Decadal Survey. Major scientific goals for the study of planetesimals are to decipher geological processes in SSSBs not determinable from investigation…

天体物理仪器与方法 · 物理学 2019-02-07 Greg Wilburn , Himangshu Kalita , Aman Chandra , Stephen Schwartz , Erik Asphaug , Jekan Thangavelautham
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