The Black Hole
Let it go.
Make room to focus.
A nagging thought. An unfinished task. Something you cannot solve right now. Write it down, send it into the black hole, and come back to what matters.
Type something to let go of right now
Drag to explore the black hole
Try it here. Type a thought and let the black hole take it.
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Focus TimerRun a clear visual countdown for focus blocks from one minute to four hours.
Attention Span TestTry a 2.5-minute response task and review your misses, false alarms, and response consistency.
Apollo 11 QuizSix questions from our Apollo 11 video plus six bonus questions, each checked against NASA mission records. Questions come first so you can print them; answers, reasons, and sources sit below.
Apollo 12 Lightning StrikeLightning hit Apollo 12 twice in its first minute. A flight controller recognized a pattern he had once chased after a late-night test, and the telemetry came back in under two minutes. Here is the transcript, second by second.