Image: Planetary NebulaA civilization is using a special device to monitor another people. The device remains undetected even though it is in plain view because it looks like something else. What is this device and how is it disguised? Will those who are being monitored ever figure out that the object isn't what it seems? Give yourself 200 words to put down your ideas.
Image Credit: Planetary Nebula NGC 6751, NASA, Hubble Heritage Project