Astronomers hope to get lucky and discover the first evidence of plate tectonics on a planet besides Earth: remnants of continental crust in the rocky material that pollutes some white dwarfs.
Obtaining high-resolution spectra of asteroids is challenging. Measuring asteroid albedos in broad photometric wavebands is relatively easy, and potentially provides useful information about surface composition.
The unexpectedly large inclination of Iapetus may result from close encounters between Saturn and an interloping ice giant planet during the early evolution of the Solar System.
New Horizons will arrive at Pluto in mid-2015. Images of ancient tectonic features on its surface may provide evidence for the existence of an ancient, subsurface ocean.
The White House just released its budget request for FY 2015. Looks like NASA will continue supporting its main priorities, but will they sacrifice SOFIA to fund other missions?
Strongly magnetized rocks on Mars are primarily concentrated in the southern hemisphere. This paper raises a serious objection to the hypothesis that localized dynamo action in the ancient martian core explains this puzzling observation.
In the final months of World War II, Vannevar Bush, director of the Office of Scientific Research and Development, prepared a report that would forever shape federal support of scientific research.
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.