The night sky is an archive, not a window
Light takes time to arrive. That gives astronomy its extraordinary reach into the past—and sets a limit on a familiar time-travel fantasy.
Read the article : The night sky is an archive, not a windowBEYOND THE KNOWN · THE JOURNAL
Follow a question.
Articles, explainers, thought experiments, discussions, and field notes for the endlessly curious.
1 piece to explore · Science & Future