Add Yahoo as a preferred source to see more of our stories on Google. On January 10, 1946, the U.S. army bounced radar signals off of Earth's moon for the first time ever. Known as "Project Diana," ...

A team of scientists participating in a radio astronomy summer school had the unexpected opportunity to observe a recently discovered near-Earth asteroid as it zipped past our planet on July 7. The ...

The giant radio telescope at the Arecibo Observatory was destroyed twice: the first time deliberately to save the planet, the second time as a result of natural disasters—making it harder to save ...

https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!421060~!0#focus ...

On January 10, 1946, the U.S. army bounced radar signals off of Earth's moon for the first time ever. Known as "Project Diana ...