Abstract The Kepler Mission is a space observatory launched in 2009 by NASA to monitor
170 000 stars over a period of four years to determine the frequency of Earth-size and larger …

Magnetic activity similar to that of the Sun is observed on a variety of cool stars with external
convection envelopes. Stellar rotation coupled with convective motions generate strong …

Water is prime natural resources fulfilling our needs in a precisious assets. we must acts to
preserve and utilize every drop of water. water resources can be assessed on the basis of …

The bible of solar engineering that translates solar energy theory to practice, revised and
updated The updated Fifth Edition of Solar Engineering of Thermal Processes, Photovoltaics …

The global temperature rose by 0.2° C between the middle 1960's and 1980, yielding a
warming of 0.4° C in the past century. This temperature increase is consistent with the …

Photoreceptors for visual perception, phototaxis or light avoidance are typically clustered in
eyes or related structures such as the Bolwig organ of Drosophila larvae. Unexpectedly, we …

A wealth of new experimental and theoretical results has been obtained in solar physics
since the first edition of this textbook appeared in 1989. Thus all nine chapters have been …

In order to evaluate how much Total Solar Irradiance (TSI) has influenced Northern
Hemisphere surface air temperature trends, it is important to have reliable estimates of both …

The brightness of the Sun varies on all timescales on which it has been observed, and there
is increasing evidence that this has an influence on climate. The amplitudes of such …

Helium and heavy-element diffusion are both included in precise calculations of solar
models. In addition, improvements in the input data for solar interior models are described …