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solar system

This tag is associated with 48 posts

In the beginning was Theia

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.

Can Icelines Explain Uranus and Neptune?

A new hypothesis posits that the ice giant planets formed between the CO and N2 icelines in the Solar System’s protoplanetary disk.

Mercury’s surprising density: What about magnets?

A new model explains Mercury’s major density with magnetism.

A Lunar Mystery Solved, with the Earth as the Culprit

Heat from the proto-Earth may have caused the difference in the Moon’s far- and near-side crust thicknesses.

Titan’s Cameo as an Exoplanet

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.

Testing the Titius-Bode law on exoplanets

From examining extrasolar planetary systems, we can test if the Titius-Bode “law” is actually a law.

A New Moon from Saturn’s Ring

For the first time ever, signatures from a newly formed moon are spotted in Saturn’s ring system.

An Exoplanet’s Fast Spin

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.

The nearly circular orbits in our solar system, not drawn to scale.

How Weird Is Our Solar System?

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?

Crowd-Sourcing Crater Identification

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.

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