In May, radio astronomers at the Arecibo radio telescope in Puerto Rico pointed their Brobdingnagian antenna in the direction of Ross 128. What the Puerto Rican astronomers found when the data were analyzed was a wide-band radio signal. This signal not only repeated with time, but also slid down the radio dial, somewhat like a trombone going from a higher note to a lower one.

In May, radio astronomers at the Arecibo radio telescope in Puerto Rico pointed their Brobdingnagian antenna in the direction of Ross 128. What the Puerto Rican astronomers found when the data were analyzed was a wide-band radio signal. This signal not only repeated with time, but also slid down the radio dial, somewhat like a trombone going from a higher note to a lower one.

The SETI Institute has developed an instrument that, at relatively low cost, could continuously survey the entire night sky for brief laser pulses.