An alien probe contacts the space station Babylon 5 in the season 3 episode "A Day in the Strife." The probe is a Bracewell probe, asking a series of questions and offering new technologies, medicine and science in return for answers to said questions.
Wilkinson Microwave Anisotropy Probe | Gravity Probe B | Energy Probe | Doug Bracewell | Thermal Probe Lithography | The Probe | Scanning probe microscopy | scanning probe microscopy | Probe Records | News Probe | Michael Bracewell | John Bracewell | Ford Probe | Bracewell probe |
Duncan Lunan proposed the radio echoes observed by Størmer and Van der Pol in 1928 might have been transmissions from a Bracewell probe, an artifact of aliens trying to communicate with us by bouncing back our own signals.