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Inflow, Outflow Cycle of Gas Near Black Hole
Artist impression of Abell 2597 showing the central supermassive black hole expelling cold, molecular gas -- like the pump of a giant galactic fountain. Recent data suggests that the expelled gas will eventually fall back towards the black hole, restarting the cycle.
Human eyes are built to collect and focus light that is bouncing off of the world around us. We call this light “visible light,” because, well, we can see it.
