Results 301 to 310 of about 171,503 (343)
Some of the next articles are maybe not open access.
Impacting small Near Earth Objects
Advances in Space Research, 2008Abstract The design of a low-cost spacecraft to impact on a small, faint Near Earth Object (NEO), poses major challenges. This paper focuses on the terminal phase of such impact mission, analyzing the capability of autonomous Guidance, Navigation and Control (GNC) systems to compensate the deviations in the impact point to achieve a successful ...
J. Gil-Fernández, C. Corral, R. Panzeca
openaire +2 more sources
Near Earth object mitigation studies
2016 IEEE Aerospace Conference, 2016Early detection of an object on a collision course with Earth, leading to well-considered and effective measures to mitigate its hazards, is not always possible due to a number of extenuating factors. NASA and the Department of Energy (DOE)'s National Nuclear Security Administration (NNSA) have partnered to develop a full systems framework for ...
Mark Boslough +6 more
openaire +2 more sources
A Near‐Earth Object Hazard Index
Annals of the New York Academy of Sciences, 1997ABSTRACT: With the advent of expanded near‐Earth object (NEO) surveys, the number of known close approaches to Earth will increase dramatically. For many of these objects, uncertainties in their preliminary orbits will result in calculations yielding nonzero probabilities of collision over the next century. An index system is proposed which places the
openaire +2 more sources
Near Earth Objects - a threat and an opportunity
Physics Education, 2003In the past decade the hazard posed to the Earth by Near Earth Objects (NEOs) has generated considerable scientific and public interest. A number of major films, television programmes and media reports have brought the issue to public attention. From an educational perspective an investigation into NEOs and the effects of impacts on the Earth forms a ...
openaire +2 more sources
Near-Earth Objects and the United Nations
2018This chapter presents the past, current and future efforts of the United Nations (UN) through its Office for Outer Space Affairs (UNOOSA) and the United Nations (UN) Committee on the Peaceful Uses of Outer Space (COPUOS) in the field of near-Earth objects and planetary defense.
Romana Kofler +2 more
openaire +2 more sources
The SRT, near-earth objects and space debris
2006The improvements, by means of radar observations, of the accuracy with which the orbits of near Earth asteroids and comets are determined are a key factor in order to be able to exclude future collisions of any of these bodies with the Earth. The SRT, once equipped with a suitable transmitter, can have an important role in this context.
VALSECCHI G. B +3 more
openaire +4 more sources
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings, 2020
Marina Sokolova +4 more
openaire +1 more source
Marina Sokolova +4 more
openaire +1 more source
Near Earth Objects and Their Physical Characterization
2018The present research on Near Earth Objects (NEOs) is mostly limited on addressing the question on their number and how hazardous they may be to the Earth. Catalina Sky Survey (CSS) has submitted thousands of astrometric observations to the Minor Planet Center (MPC) resulting in discovery of hundreds of NEOS but much of their physical characteristics ...
openaire +2 more sources
Dynamical evolution of near-Earth objects
An apparent discrepancy between the number of observed near-Earth objects (NEOs) with small perihelion distances (q) and the number of objects that models predict, has led to the conclusion that asteroids get destroyed at non-trivial distances from the Sun.Athanasia Toliou, Mikael Granvik
openaire +2 more sources
Two ‘what’ pathways for action and object recognition
Trends in Cognitive Sciences, 2022Moritz F Wurm, Alfonso Caramazza
exaly