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planetary science

This tag is associated with 104 posts

Habitability Whether Rocks Weather or Not?

Habitable zone estimations take the climate regulation of the carbon cycle into account. But are we drawing the edges of the habitable zone too wide?

Orderly disorder: Simulations of planet-disk dynamics with AREPO

Only the combined effort of observational and theoretical methods can really bring us to a more thorough understanding of the Universe throughout all spatial scales. The authors of today’s paper use and adapt the moving-mesh fluid mechanics code AREPO to function with protoplanetary disks and test its imprint on the potential of planets to open up gaps in the surrounding gas.

Chondrule formation by shocks?

Chondrules are among the oldest components of the solar system and give insight in the solar system’s earliest phase. But how are they formed? In shocks? That seems to be at least difficult.

Habitable Moons at the Ice Line?

Those of us who love astrobiology get really worked up about the lack of Earth-sized exoplanets found at Earth-like distances from their stars. All we want, we who hope for lots of extraterrestrial life, is a bunch of Earth-like planets doing Earth-like things so we can feel better about the odds for lots of Earth-like life in the universe.

Newer Horizons Beyond Pluto

New Horizons is going to reach Pluto in July, 2015. What happens after that?

Welcome to Mars, MAVEN and MOM!

Meet Mars’ two newest moons, MAVEN and MOM.

Instruments selected for Mars 2020, NASA’s latest rover

NASA recently revealed the scientific instruments for Mars 2020, the next Mars rover and the first step in an ambitious sample return campaign.

Migrating Super-Earths vs. Terrestrial Planets

Of all the kinds of planets we’re finding around other stars—hot Jupiters and mini-Neptunes and those dubiously called “Earth-like”—super-Earths orbiting close to their stars are among the most abundant. While planets so close to their stars are poor candidates for habitability, they are important to understanding the possibility of other habitable planets in these seemingly common systems.

Searching for Signs of Plate Tectonics in Polluted White Dwarfs

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.

Mercury’s surprising density: What about magnets?

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

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