The detection of a gamma ray burst by the MAGIC telescopes at the Roque de los Muchachos Observatory allows us to study whether the speed of light in a vacuum is a constant in nature. The results, published in the journal Physical Review Letters, indicate that there are no significant differences in the arrival times of photons of different energies, which sets constraints on some quantum theories of gravity.

A Master’s degree research project at the University of Barcelona (UB), carried out at the Instituto de Astrofísica de Canarias (IAC) by the student Alejandra Yrupe Fresco, currently studying for her doctorate at the Max Planck Institute for Extraterrestrial Physics, in Germany, has revealed the faint nucleus and the structure of the jet of particles in the nuclear region of M87, the brightest galaxy in the Virgo cluster. This project was carried out in collaboration with the IAC researchers Juan Antonio Fernández Ontiveros, Almudena Prieto and José Antonio Acosta Pulido, and was possible

To celebrate Asteroid Day, which commemorates the impact of the Tunguska Fireball in 1908, several researchers from the Instituto de Astrofísica de Canarias (IAC) will participate in on-line chats to talk about the nature of these lesser bodies of the Solar System, and about the risk of impact on the Earth.

The exoplanets closest to us offer the best opportunities to make a detailed study of their physical properties, including the search for life outside the Solar System. In research led by the University of Göttingen (Germany), in which the Instituto de Astrofísica de Canarias and the University of La Laguna (ULL) are participants, has detected a system of superearths in orbit round the nearby star Gliese 887 (GJ 887), the brightest red dwarf in the sky. The results are published today in the journal Science. Superearths are planets with a larger mass than the Earth, but substancially less

An international team of scientists, with the participation of the Instituto de Astrofísica de Canarias (IAC), has discovered a planet of the size of Neptune orbiting in rather more than a week around AU Microscopii, a young star a little over of 30 light years away, and surrounded by a disc of debris left over from its formation. The data were obtained with NASA’s Transiting Exoplanet Survey Satellite (TESS) and the Spitzer Space Telescope (now retired from service). The Discovery is published today in Nature magazine. The finding in this system, abbreviated as AU Mic, will be a unique

Laser frequency combs (LFCs) are well on their way to becoming the next-generation calibration sources for precision astronomical spectroscopy. This development is considered key in the hunt for low-mass rocky exoplanets around solar-type stars whose discovery with the radial-velocity method requires cm/s Doppler precision. In order to prove such precise calibration with an LFC, it must be compared to another calibrator of at least the same precision. Being the best available spectrograph calibrator, this means comparing it to a second - fully independent - LFC. Here, we report on a test in