Astronomy for curious people
The cosmos,
clearly explained.
Ad Astra for People in a Hurry makes astronomy and astrophysics approachable through vivid analogies, surprising facts, and a sense of humour.
A Lazyweaver project. Free, with no purchases.
Public plugin listing coming soon.
Two practical astronomy tools
Calculate light-travel time, convert astronomical distances, or estimate spherical surface gravity and escape speed. Look up planet and moon measurements from a dated NASA/JPL data snapshot, with source links.
Start with a big question
What is the difference between dark matter and dark energy?
If the Solar System were the size of a coin, how large would the Milky Way be?
What happens near a black hole? Explain it with a simple analogy.