Potentially hazardous asteroids (PHAs) are objects that can have close encounters with Earth and are significantly large to cause significant regional damage in...

Context. The near-Earth orbital space is shared by natural objects and space debris that can be temporarily captured in geocentric orbits. Short-term natural...

The transiting extrasolar planet XO-3b is remarkable, with a high mass and eccentric orbit. These unusual characteristics make it interesting to test whether...

O-type stars display rotational modulation of their photometric brightness due to surface features induced by fossil magnetic fields, and possibly through...

Inferring magnetic and thermodynamic information from spectropolarimetric observations relies on the assumption of a parameterized model atmosphere whose...

Coronal mass ejections (CMEs) are a major driver of space weather and thus can have important negative technological and social impacts. To assess their...

From inversion of a time series of slit spectra, observed in a quiet region of the solar photosphere, averaged models of a granular cell have been obtained...

Measurements of exoplanetary orbital obliquity angles for different classes of planets are an essential tool in testing various planet formation theories...

Fullerenes, the carbon molecules with 60 and 70 atoms, were recently detected in a series of planetary nebulae, in protoplanetary nebulae and in other...