What Should We Assume?
Astronomers need to rely on assumptions sometimes. How do we make sure they don’t get us into trouble?
The Tortoise and the Star
Spectrographs here on Earth are getting good enough to detect tortoise-speed velocity shifts in starlight. That means that we need to understand the bubbling, broiling surfaces of stars to tortoise-level precision.
The Planets in the Gaps
We’ve strongly suspected they’re there. A new method promises to prove it.
What to Do When You’re Stuck
A handy guide from 1945!
Fraught with Spots
If we don’t understand starspots, we won’t understand exoplanet atmospheres.