Solar magnetic fields are usually extrapolated into the corona starting from photospheric mag-netic measurements that can suffer from significant uncertainties...

Observations from massive stars in H II regions can help to clarify theories of massive star formation because they show the degree of isolation under which...

The influence on the fusion process of coupling to collective degrees of freedom has been explored. The significant enhancement of he fusion cross setion at sub...

At the First International Conference on Comet Hale-Bopp (Canaries, 1998) many astronomers agreed with the value of the period of axial rotation of its nucleus...

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We analysed high resolution spectra of Galactic O-type stars from the far-UV to the optical. We combined spectra from the Far Ultraviolet Spectroscopic Explorer...

We introduce the idea that rotational fission is a possible mechanism in the formation of systems of large TNOs: binary systems, complex systems (Haumea), and...

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We examine using numerical examples and conservative assumptions, the consequences of the fractal structure of the interstellar medium in a disk galaxy in...