This question is important because a large fraction of planetary nebulae (about 80%) are bipolar or elliptical rather than spherically symmetric. Modern...

Los habitantes del País de Hatti, contemporáneos y rivales de los egipcios del Reino Nuevo, produjeron durante varios siglos una sofisticada cultura heredera de...

We have discovered small whirlpools in the Sun, with a size similar to the terrestrial hurricanes (<0.5 Mm). The theory of solar convection predicts them, but...

Among the over 450 known exoplanets, the planets that transit their central star stand out, due to the wealth of information that can be gained about both...

The detection of chemical inhomogeities in the Galactic disk requires an oustanding precision in the abundance measurements and a thorough estimation of the...

Observations show that massive star formation quenches first at the centres of galaxies. To understand quenching mechanisms, we investigate the thermal and non...

How far can we see galaxies in the distant Universe? When are the first metals and the first dust formed? We have now the first results on these topics (Laporte...

When we measure the electron density within an H II region using ratios of emission lines we find characteristic values in the range of 100-300 cm -3. But when...

Current state-of-the-art imaging surveys deliver images with limiting surface brightness of 26.5 mag/arcsec^2. This depth is around 100 times fainter than the...