THE application of directional wireless methods to assist aerial and marine navigation has been progressing steadily during the past few years. After passing a period of uncertainty as to its accuracy ...

Astronomers have discovered a new celestial object, a compact radio beacon located in the galaxy NGS 4945, about 12 million light-years away. Its light is polarized at an almost impossible level that ...

Way back in the 1980s, when I was a young naval officer, the Global Positioning System was still in its experimental stage. If you were in the middle of the ocean on a cloudy night, there was pretty ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. The hunt for aliens isn’t as sensational or speculative as you ...

A while back, [m0xpd] picked up an unbearably cheap AD9850 DDS module from ebay. He turned this in to a Raspberry Pi-powered radio beacon, but like so many builds that grace our pages, the trolls didn ...

PASADENA, Calif. — When galaxies collide, they leave clues in the wake of their primordial history: radio beacons from their tell-tale hearts. Thanks to an upgrade of the radio telescope at Arecibo ...

A while back, [m0xpd] picked up an unbearably cheap AD9850 DDS module from ebay. He turned this in to a Raspberry Pi-powered radio beacon, but like so many builds that grace our pages, the trolls didn ...

Quasars are among the brightest objects in the Universe. Therefore, astronomers can study them in detail at large cosmological distances. Although first discovered in 1963 by measuring radio waves, ...