F-104. This is looking up the tail pipe at the back of the engine. The circular bars are the spray bars for the afterburner.
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These are of the exhaust nozzle. It's a variable outlet size. It varies based on the power demands of the engine.
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Basic specs: Top speed is Mach 2. Rate of climb 45,000 feet a minute. Service ceiling is 55,000 feet. Zoom ceiling is 90,000 feet (The sky is black at that point). Absolute record with an F-104 is 120,000 feet. These specs are still impressive 50 years later.