Recent News

What's happening at the AO?

Team radar from across several institutions were busy this month observing many targets of interest, including Comet 46P/Wirtanen, near-Earth asteroid 2003 SD220, and 7 other NEAs. The cross-institution teams used the NASA-funded Arecibo S-band planetary radar to study these objects in order to measure their astrometry, size, and characterize their surfaces. Read More

New Message - The Global Challenge

In 1974, the Arecibo Observatory made history by beaming the most powerful radio message into deep space ever made. The famous Arecibo Message was designed by the AO 74’s staff, led by Frank Drake, and with the help of the astronomer and famed science communicator Carl Sagan. It contained information about the human race and was intended to be our intergalactic calling card. Read More