Archives

December 2015


Secular and mean motion resonances (hearafter MMR) are effective perturbations to shape planetary systems.

Plant biologists agree that it all began with green algae. At some point in our planet's history, the common ancestor of trees, ferns, and flowers developed an alternating life cycle--presumably allowing their offspring to float inland and conquer Earth

In this paper, we explore how the compositions of terrestrial planets are affected by dynamical evolution of giant planets.

Some recently discovered short-period Earth to Neptune sized exoplanets (super Earths) have low observed mean densities which can only be explained by voluminous gaseous atmospheres.

Numerous geological features that could be evaporitic in origin have been identified on the surface of Titan.

We present deep Herschel-PACS spectroscopy of far-infrared water lines from a sample of four protoplanetary disks around solar-mass stars, selected to have strong water emission at mid-infrared wavelengths.

The planet, more than four times the mass of the Earth, is one of three that the team detected around a red dwarf star called Wolf 1061.

The next generation of ground and space-based telescopes will image habitable planets around nearby stars. A growing literature describes how to characterize such planets with spectroscopy, but less consideration has been given to the usefulness of planet colors.

Within the scheme of conformal cyclic cosmology (CCC), information can be transmitted from aeon to aeon.

The climate of Mars likely evolved from a warmer, wetter early state to the cold, arid current state.

Researchers from North Carolina State University have confirmed that blood vessel-like structures found in an 80 million-year-old hadrosaur fossil are original to the animal, and not biofilm or other contaminants.

Life on other planets? A recent study by UNLV astrophysicist Jason Steffen is shedding new light on this persistently challenging question.