Sketch illustrating the dynamical evolution of the solar system planets during and after disk dissipation. The two-sided arrows represent the existence of mean motion resonances. Blue and brown scatters represent
Sketch illustrating the dynamical evolution of the solar system planets during and after disk dissipation. The two-sided arrows represent the existence of mean motion resonances. Blue and brown scatters represent
A summary schematic of assumptions that are made in planet formation modeling, protoplanetary disk modeling, and exoplanet atmospheric modeling. We note that several of the presented variables can be directly
a–c, Spatial distribution of the biogeographical sectors in bioregions of mammals (a), amphibians (b) and reptiles (c). Icons indicate the taxonomic group to which bioregions correspond.The biogeographical interpretations of the
An artist’s rendering of the warm exoplanet WASP-80 b and an overview of its planet-system parameters. Planet image credit: NASA/Ames Research Center. astro-ph.EP WASP-80 b, a warm sub-Jovian (equilibrium temperature
Telluric-corrected HARPS observations at the sodium doublet, obtained on two nights nearly one year apart, vertically offset for clarity. In both nights, significant disk line absorption is visible, as well
The edge-on profile of the Knife Edge spiral galaxy captured by Ronald Brecher in May 2025. (Image credit: Ronald Brecher) Astrophotographer Ronald Brecher captured a striking image of the Knife
In a significant yet somber chapter in the ongoing saga of lunar exploration, the HAKUTO-R Mission 2, aptly named Resilience, encountered an unfortunate fate during its landing attempt on the
Astronomers have discovered a new type of cosmic explosion they’re calling extreme nuclear transients. They occur when a supermassive black hole eats a star some 10 times the sun’s mass.
Expedition 71 Flight Engineer and NASA astronaut Jeanette Epps poses for a portrait inside the seven-window cupola, the International Space Station’s “window to the world,” while orbiting 259 miles above
The sector-to-sector undetrended PDCSAP light curves of TOI-2285 binned by 30 minutes. The sector number is indicated on the left. The locations of even- and odd-number transits of TOI-2285 b