Different types of electromagnetic wave have different uses and dangers. Radio waves are used for sending radio and television signals. They are also used to control radio-controlled toys ...

Astronomers say they have traced a mysterious pulsing in the Milky Way to a surprising source: a dead star locked in a dance ...

Small stars that are far away tend to be faint and hard to see. De Ruiter and her colleagues used the Multiple Mirror ...

In 1959 two Cornell University physicists described how we ... Over great distances that gas and dust absorb many types of radiation but radio waves pass through nearly unimpeded. For interstellar ...