Budget Battle Update: Dueling Visions for NASA
Another day, another fight over the future of America’s space agency. The House and the Senate can’t agree about asteroid retrieval, science funding, and much else.
Is Earth on the brink of a runaway greenhouse?
This paper considers the possibility that Earth could suffer a runaway or moist greenhouse effect, which probably turned Venus into a hellish wasteland long ago.
Transit Probabilities: Not As Simple As They Seem
Our simple formula for predicting the probability that an exoplanet will transit might miss something important.
Magnets in the Deep: Lower Mantle Metallization in Rocky Exoplanets
The existence of a conducting layer near the core/mantle boundary has profound implications for the operation of a dynamo in rocky exoplanets and for our ability to detect exoplanetary magnetic fields.
A Tale of Two Surveys
Decadal surveys are the Bibles of space science policy. How are they prepared? How influential are they?