How to Signal Aliens

The video explores three methods for signaling aliens: radio transmissions, laser pulses, and the transit method. Radio transmissions require significant resources and are costly. Laser pulses are detectable but limited by interstellar dust. The transit method involves creating artificial objects to mimic planetary transits, offering a long-lasting signal without continuous transmission. Each method has its pros and cons, and the video concludes with considerations for future research and the potential for aliens to use similar methods.

What is the significance of the transit method in the context of finding exoplanets?

Explain the concept of using billboards as a method to signal aliens.

How might aliens interpret the presence of billboards in space according to the text?