The Giant Impact Hypothesis is the most widely accepted theory for the creation of the Moon; the authors here investigate possible configurations of the early Solar System to produce the right conditions for impact between Earth and the doomed proto-planet Theia.
A new hypothesis posits that the ice giant planets formed between the CO and N2 icelines in the Solar System’s protoplanetary disk.
A new model explains Mercury’s major density with magnetism.
Heat from the proto-Earth may have caused the difference in the Moon’s far- and near-side crust thicknesses.
This paper uses Cassini’s infrared eyes to watch the Sun appear to pass behind Titan and light up its atmosphere. From these observations, the authors model different components of the thick atmosphere, and gain new insights about how exoplanets with similar hazy atmospheres might look.
From examining extrasolar planetary systems, we can test if the Titius-Bode “law” is actually a law.
For the first time ever, signatures from a newly formed moon are spotted in Saturn’s ring system.
Planets in the Solar System with a higher mass spin faster than lower-mass planets. But what about planets in other systems? The authors of this paper make the first measurement of an exoplanet’s spin to compare its spin and mass to Solar System planets.
Earth and its Solar System compatriots all have nearly circular orbits, but many exoplanets orbit their stars on wildly eccentric paths. Is our home system strange? Or is our sense of the data skewed?
How good are citizen-scientists at characterizing crater densities and size distributions on the lunar surface? For that matter how good are the experts? Today’s study attempts to answer these questions by having a group of experts analyze images of the Moon from the Lunar Reconnaissance Orbiter Camera.