Tiny crystals in Earth’s crust may have recorded meteorite and comet impacts as our planet traveled through the spiral arms ...
Abstract: A millimeter-wave beam-steerable antenna by controlling the phase difference between the feeding ports is proposed and applied to achieve a wide-angle beam-scanning millimeter-wave phased ...
Now, astronomers have found a star that may be as close as we’ve ever come to witnessing one of the primordial stars. Known ...