The Earth's albedo is a fundamental climate parameter for understanding the radiation budget of the atmosphere. It has been traditionally measured not only from...

Of the 342 planets so far discovered orbiting other stars, 58 `transit' the stellar disk, meaning that they can be detected through a periodic decrease in the...

Observations of the Earth as a planet using the earthshine technique (i.e. looking at the light reflected from the dark side of the Moon) have been used for...

The pilgrimage along the Way of Saint James constituted the principal mechanism for the introduction of new currents of thought into the Iberian Peninsula, such...

We report a methodology to determine the quality factor ( Q) of wavy dark matter detectors equipped with multilayered resonators, including Fabry-Pérot...

A dedicated mission to investigate exoplanetary atmospheres represents a major milestone in our quest to understand our place in the universe by placing our...

We present simultaneous X-ray (RXTE) and optical (ULTRACAM) narrow-band (Bowen blend/HeII and nearby continuum) observations of Sco X-1 at 2-10 Hz time...

On June 30, 1973, Concorde 001 intercepted the path of a solar eclipse over North Africa, Flying at Mach 2.05 the aircraft provided seven observers from France...

After four years during which only the spectacular light echo was showing continuous and rapid evolution while the central star was nearly constant, in autumn...