A casual photograph of comet PanSTARRS taken with simple equipment displays the crystal-clear quality of the sky at Calar Alto Observatory...

A physical system of three quasars has been discovered, the second of this kind. This finding, based on observations performed at Calar Alto and other observatories, provides clues about the merging processes that led to the formation of massive galaxies in the ancient universe…

Scientists belonging to the Center for Astrobiology (CAB/CSIC-INTA) and to Calar Alto Observatory, have taken part in the finding of the smallest exoplanet known to date. The object, smaller tan Mercury, was detected with Kepler space telescope and Calar Alto contributed with crucial data to confirm the finding. The results from this research are published in the February 20^th 2013 issue of the international scientific journal Nature…

During the night of February the 15th 2013, the small celestial body 2012DA₁₄ has its closest approach to Earth. A research team from the Astrophysical Institute of Andalusia (IAA-CSIC) studies it from Calar Alto Observatory to characterize its physical properties…

An international research team is performing a program in search for the furthest galaxies in the universe. But distant objects are also very faint. For this reason, the search relies upon one of the strangest implications of general relativity: the amplification of light coming from remote bodies due to the gravitational effects of closer ones, the gravitational lensing effect. Calar Alto telescopes and instruments are contributing to this research…