Fly about 2,600 light-years to Hubble Space Telescope imagery of the Cygnus loop nebula. See images from 2001 and 2020.

CTA trains on the Brown, Green, Pink and Orange lines will not run at all in the Loop this weekend as the agency conducts maintenance. Here's what you need to know.

The decision-making framework stands for Observe, Orient, Decide, and Act, and each phase of that acronym is important when ...

Heads up riders! The CTA said no trains will run on the Loop elevated rails this weekend, and because of other infrastructure ...