"Why?", I ask.

dustinmartian:

Image of the Day: 1st Kepler “Search for Extraterestrial Intelligence” (SETI) Signals Received
The image above shows the radio signal detected by the 100-meter Green Bank Telescope in West Virginia while scanning the exoplanetary candidate KOI 817 discovered by the Kepler mission. This is the kind of signal SETI scientists would expect to find if an alien civilization is transmitting.
“We’ve started searching our Kepler SETI observations and our analyses have generated some of our first candidate signals, which areundoubtedly examples of terrestrial radio frequency interference (RFI),” scientists of the University of California, Berkeley announced on Friday.The detection of these artificial signal provides the UC Berkeley SETI team with a great opportunity to understand the kind of artificial signals they hope to eventually discover…
Click the picture to read the article. Huge breakthrough.