Follow a journey
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https://blackhole.org/universe/journeys/
A journey connects questions that build on one another. Read the pages in order, pause for an investigation, or jump to a question you already care about. These routes share the same articles as the subject hubs.
Choose a connected story
Section titled “Choose a connected story”- Reading journey Your first journey through astronomy Travel from the Moon to cosmic history through eight connected questions.
- Reading journey How astronomers know Follow the chain from direction and light to planetary, stellar, and galactic inferences.
- Reading journey From stars to black holes Connect stellar properties, evolution, and the evidence for black holes.
- Reading journey Worlds and life Connect planetary diversity, discovery, habitability and the search for life.
Set your own pace
Section titled “Set your own pace”The first journey leads from the Moon to cosmic history. How astronomers know concentrates on the relationship between measurement and explanation. From stars to black holes follows stellar properties, changing structure, and the evidence for compact remnants.
Worlds and life connects planetary diversity, detection, habitability and the evidence needed for a life or technology claim. Its destination is a thoughtful follow-up proposal, not an announcement of a discovery.
Allow several short sessions for a complete journey. The article reading estimates exclude extended discussions and optional mathematics. You can bookmark any stop, use your browser’s back button, or return to this directory; no sign-in or completion tracker is needed.
Carry one question between pages
Section titled “Carry one question between pages”At each stop, write or think of one observation and the conclusion it supports. Ask what assumptions connect the two. By the end, compare examples where several independent observations support the same explanation.
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