Results 71 to 80 of about 932,549 (275)

Exploring the solar system [PDF]

, 1964
Nasa programs for solar activity and radiation ...

core   +1 more source

A Twenty Year Decline in Solar Photospheric Magnetic Fields: Inner-Heliospheric Signatures and Possible Implications?

, 2015
We report observations of a steady 20 year decline of solar photospheric fields at latitudes $\geq$45${^{o}}$ starting from $\sim$1995. This prolonged and continuing decline, combined with the fact that Cycle 24 is already past its peak, implies that ...
Ananthakrishnan, S., Bisoi, Susanta Kumar, Fujiki, K., Janardhan, P., Jose, L., Sridharan, R., Tokumaru, M.   +6 more
core   +1 more source

The search for the ultimate exercise countermeasure to preserve crew health and ensure mission success in long‐duration spaceflight

Experimental Physiology, EarlyView.
Abstract The current understanding of crew health maintenance is founded upon decades of physiological research conducted in terrestrial spaceflight analogues and in low Earth orbit, particularly on the International Space Station. However, as we progress towards the Lunar Gateway and interplanetary missions, it is imperative that the tools employed to
Rodrigo Fernandez‐Gonzalo, Stefan Schneider, Martina Heer, Anna‐Maria Liphardt   +3 more
wiley   +1 more source

The origin of interplanetary switchbacks in reconnection at chromospheric network boundaries

Nature Astronomy
There is renewed interest in heliospheric physics following the recent exploration of the pristine solar wind by the Parker Solar Probe. Magnetic switchback structures are frequently observed in the inner heliosphere, but there are open questions about ...
C. Hou, Jiansen He, D. Duan, Ziqi Wu, Yajie Chen, D. Verscharen, A. Rouillard, Huichao Li, Liping Yang, S. Bale   +9 more
semanticscholar   +1 more source

Height‐Integrated Ionospheric Conductances Parameterized By Interplanetary Magnetic Field and Substorm Phase

Journal of Geophysical Research: Space Physics, 2020
An understanding of ionospheric conductances is important for models of large‐scale dynamics in the Earth's magnetosphere. We parameterize height‐integrated Pedersen and Hall conductances in the ionosphere, derived from images of auroral emissions ...
J. Carter, S. Milan, L. Paxton, B. Anderson, J. Gjerloev   +4 more
semanticscholar   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

SOLAR WIND INVESTIGATIONS BY OBSERVATIONS OF INTERPLANETARY SCINTILLATIONS OF COSMIC RADIO SOURCES AT DECAMETER WAVELENGTHS

Radio Physics and Radio Astronomy, 2017
Purpose: Description of the solar wind investigation technique based on interplanetary scintillation observations of the decameter radio emission of space radio sources.
N. N. Kalinichenko, M. R. Olyak, O. O. Konovalenko, I. N. Bubnov, S. N. Yerin, A. I. Brazhenko, O. L. Ivantishin, O. A. Lytvynenko   +7 more
doaj   +1 more source

Instabilities Driven by Proton Temperature Anisotropy in the Presence of Alpha Particles: Implications for Proton-temperature-anisotropy Constraint in the Solar Wind

The Astrophysical Journal, 2023
In situ measurements reveal that proton temperature anisotropy is ubiquitous in the solar wind. Various plasma instabilities have been proposed to regulate the distribution of the proton temperature anisotropy in the solar wind; detailed constraint ...
L. Xiang, D. J. Wu, L. Chen, Q. H. Li, G. Q. Zhao, H. Q. Feng, H. W. Yu   +6 more
doaj   +1 more source

Protons in the near-lunar wake observed by the Sub-keV Atom Reflection Analyzer on board Chandrayaan-1 [PDF]

, 2010
Significant proton fluxes were detected in the near wake region of the Moon by an ion mass spectrometer on board Chandrayaan-1. The energy of these nightside protons is slightly higher than the energy of the solar wind protons.
A. Bhardwaj, A. Schaufelberger, Barabash, Bhardwaj, Birch, Crow, Farrell, Freeman, Futaana, Futaana, Futaana, Halekas, Holmström, K. Asamura, Kallio, Kimura, Lin, M. B. Dhanya, M. Holmström, M. Wieser, Mall, McCann, Newbury, Nishino, Nishino, Ogilvie, P. Wurz, R. Sridharan, Russell, S. Barabash, Saito, Samir, Trávníček, Wieser, Y. Futaana   +34 more
core   +2 more sources

Spectral Characteristics of Fundamental–Harmonic Pairs of Interplanetary Type III Radio Bursts Observed by PSP

Astrophysical Journal Letters
Based on the observations by the Parker Solar Probe (PSP) during its encounter phases of approaching the Sun, I. C. Jebaraj et al. found that fundamental–harmonic (F-H) pairs constitute a majority of interplanetary (IP) type III radio bursts.
L. Chen 陈, Bing 兵 Ma 马, D. Wu 吴, Z. Ning 宁, Xiaowei 晓伟 Zhou 周, S. Bale   +5 more
semanticscholar   +1 more source