Solving the enigma of the brightest planetary nebulae
Planetary nebulae (PNe) are the ejecta of evolved low-intermediate mass stars present in all stellar systems. Perhaps the easiest thing to do when studying PNe...
Solving the paradox of the enigmatic solar sodium D1 line polarization
In 1998 the journal Nature published a seminal letter concluding that the mysterious polarization (a particular property of light) that had been recently...
Temperature inhomogeneities cause the abundance discrepancy in H II regions
H II regions are ionized nebulae associated with the formation of massive stars. They exhibit a wealth of emission lines in their spectra that form the basis...
TESS satellite dates an ancient collision with our galaxy
Earlier this year, a team of astrophysicists has revealed new insights on an ancient collision that our galaxy the Milky Way underwent with another smaller...
Testing Einstein's equivalence principle at early cosmological epochs with quasar observations
We perform a new test of Einstein's Equivalence Principle which, for the first time, extends to very early cosmological epochs (we have studied its validity in...
Many of the most basic and important physical phenomena are determined by a set of “fundamental constants”, whose values are experimentally known to high...
Testing the extreme acceleration mechanisms in the supermassive black holes neighborhood
Blazars, Active Galactic Nuclei (AGN) whose relativistic jets point in the direction of the Earth, dominate the VHE (VHE, E>100 GeV) gamma-ray extragalactic sky...
The changing-look optical wind of the flaring X-ray transient Swift J1858.6-0814
The large amount of mass and angular momentum carried by disc winds makes them key processes to understand accretion onto compact objects, such as black holes...
The DESIRED electron temperature relations in star-forming regions of the local Universe
H II regions are clouds of glowing, ionised gas associated with regions of recent star formation. By studying the light emitted by these regions, we can learn...