NASA ScienceCasts: A Laser Message from Space
![NASA ScienceCasts: A Laser Message from Space](https://media2.spaceref.com/news/2014/nasa_iss_opals_experiment_2014_945.jpg)
OPALS launch.
NASA
In early June, a laser beam lanced out of the night sky over California, heralding a breakthrough in space communications. The message it carried was “Hello, World.”