The Instituto de Astrofísica de Canarias (IAC) has successfully completed a technological milestone of great significance: the “Redundancy of the RedIRIS Tenerife–La Palma Maritime and Terrestrial Optical Network” project. This new and robust optical communications network guarantees the continuity of the data highways for the Canary Islands’ observatories — the Teide Observatory (OT) in Tenerife and the Roque de los Muchachos Observatory (ORM) in La Palma — ensuring their connectivity in the event of any technical or environmental contingency. This achievement is the result of a joint

Ultra-faint dwarf galaxies, among the tiniest and faintest galaxies known, may hold the key to understanding one of the Universe’s biggest mysteries: the true nature of dark matter. A new study reveals that even a single collision between dark matter particles every 10 billion years — roughly the age of the Universe — is enough to explain the dark matter cores observed in these small systems. These galaxies, which contain only a few thousand stars, are dominated by dark matter and have relatively simple evolutionary histories. That makes them ideal cosmic laboratories for testing theories

We reproduce the statement issued by Robert Kirshner, Executive Director of the TMT International Observatory (TIO), regarding the decision by TIO partners not to accept the funding proposal put forward by Spain for the TMT site at the Roque de los Muchachos Observatory. Statement from TMT International Observatory on Spain’s Financing Proposal “Following TIO's September 18 letter to Minister Morant, we want to share more about our decision. TIO’s partners gave Spain’s financing proposal extensive and careful consideration, and ultimately were not able to accept the proposal. Therefore, TIO