Results 61 to 70 of about 4,595 (149)

A Comment on "The Far Future of Exoplanet Direct Characterization" - the Case for Interstellar Space Probes

open access: yes, 2010
Following on from ideas presented in a recent paper by Schneider et al. (2010) on "The Far Future of Exoplanet Direct Characterization", I argue that they have exaggerated the technical obstacles to performing such 'direct characterization' by means of ...
Bond A.   +10 more
core   +1 more source

MEMPSEP‐II. Forecasting the Properties of Solar Energetic Particle Events Using a Multivariate Ensemble Approach

open access: yesSpace Weather, Volume 22, Issue 9, September 2024.
Abstract Solar Energetic Particles (SEPs) form a critical component of Space Weather. The complex, intertwined dynamics of SEP sources, acceleration, and transport make their forecasting very challenging. Yet, information about SEP arrival and their properties (e.g., peak flux) is crucial for space exploration on many fronts.
Maher A. Dayeh   +5 more
wiley   +1 more source

Generalized Time‐Series Analysis for In Situ Spacecraft Observations: Anomaly Detection and Data Prioritization Using Principal Components Analysis and Unsupervised Clustering

open access: yesEarth and Space Science, Volume 11, Issue 9, September 2024.
Abstract In situ spacecraft observations are critical to our study and understanding of the various phenomena that couple mass, momentum, and energy throughout near‐Earth space and beyond. However, on‐orbit telemetry constraints can severely limit the capability of spacecraft to transmit high‐cadence data, and missions are often only able to telemeter ...
Matthew G. Finley   +6 more
wiley   +1 more source

A bibliography on the search for extraterrestrial intelligence [PDF]

open access: yes
This report presents a uniform compilation of works dealing with the search for extraterrestrial intelligence. Entries are by first author, with cross-reference by topic index and by periodical index.
Connors, M. M.   +3 more
core   +1 more source

Office of Tracking and Data Acquisition [PDF]

open access: yes
The Office of Tracking and Data Acquisition (OTDA) and its two worldwide tracking network facilities, the Spaceflight Tracking and Data Network and the Deep Space Network, are described. Other topics discussed include the NASA communications network, the

core   +1 more source

Innovative Mars Global International Exploration (IMaGInE) mission [PDF]

open access: yes, 2016
This paper presents the conceptual design of the IMaGInE (Innovative Mars Global International Exploration) Mission whose mission objectives are to deliver a crew of four astronauts to the surface of Deimos and a robotic exploration mission to Phobos for
Christopher Wynard   +15 more
core   +1 more source

Spacecraft Reaction Wheels [PDF]

open access: yes, 2011
This activity is designed to introduce the engineering aspects of precision pointing of spacecraft.

core  

Synthesis of 3-D coronal-solar wind energetic particle acceleration modules [PDF]

open access: yes, 2014
1. Introduction Acute space radiation hazards pose one of the most serious risks to future human and robotic exploration. Large solar energetic particle (SEP) events are dangerous to astronauts and equipment.
Chandran, Benjamin D.G.   +22 more
core   +2 more sources

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