A headline-grabbing paper calculated the prevalence of Earth-sized planets with long orbital periods around Sun-like stars. But are these planets anything like Earth?
Lots of people said lots of interesting things during the anniversary celebration for Caltech’s planetary science department.
Astronomers love to ignore magnetic fields. But they may strongly affect the pattern of atmospheric circulation in hot Jupiters.
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.
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.
Our simple formula for predicting the probability that an exoplanet will transit might miss something important.
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.
Decadal surveys are the Bibles of space science policy. How are they prepared? How influential are they?
A pair of Colombian scientists has made the first attempt to figure out the meteoroid that exploded over Russia last month.
Does NASA have a strategic direction that guides its priorities and activities? Not a coherent one, according to a critical new report from the National Research Council.