Beside this, interesting observations will be made by the Chinese radiotelescope FAST. You can try to save the radiotelescope anyway, in signing the petition. It also collected data for the SETI project (Search for ExtraTerrestrial Intelligence),Īnd was used to send a message to potential extraterrestrial civilizations in 1974. its rotation period (58 days) is exactly two-thirds of its revolution period (88 days).Īrecibo also discovered the first binary pulsar, in 1974, and permiited to image Near-Earth Asteroids. So far, Mercury is the only known planetary object in this resonance, i.e. Shortly after its first light, Arecibo measured the spin rate of Mercury, giving evidence of its 3:2 spin-orbit resonance. This is of course a great loss for observational astronomy. This actually happened on Dec, 1st, triggering the fall of the receiver platform. It appeared that trying to repair it was too dangerous, because other cables could break at any time and damage the structure. These cables suffered several damages, which led the decommissioning of the telescope in November 2020. a collecting dish, three radar transmitters, and a receiver on a platform suspended 150 m above the dish by 18 cables running from three reinforced concrete towers. It was composed of a spherical reflector, i.e. It was the largest filled-aperture radiotelescope in the world until 2016, when it was surpassed by the Chinese radiotelescope FAST. The National Astronomy and Ionosphere Center was a 305 m-wide radiotelescope, which explored the sky since November 1963 from Arecibo, Puerto Rico. Anyway, I wanted to emphasize the loss of the radiotelescope of Arecibo. So, this leaves me very few time for blogging. I love this job, but this fills my week-ends, and during the week days I work as an Assistant Professor at the University of Franche-Comté, Besançon, France. Actually, I am proudly Associate Editor of Astronomy & Astrophysics. Hi there! I am happy to write this new blog post.
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