3 papers
astro-ph.GA2025
Supermassive Stars Match the Spectral Signatures of JWST's Little Red Dots
Devesh Nandal, Abraham Loeb
The James Webb Space Telescope (JWST) has unveiled a population of enigmatic, compact sources at high redshift known as ``Little Red Dots'' (LRDs), whose physical nature remains a…
physics.geo-ph2025
Comparison of Australasian tektites with Australasian microtektites and BeLaU spherules recovered from the ocean
Eugenia Hyung, Emma Levy, Loralei Cook +4
The Australasian strewn field covers more than 15% of Earth's surface, consisting of tektites and microtektites. Australasian tektites from Southeast Asia and Australia, as well as…
astro-ph.EP2025
Comment on "Discovery and Preliminary Characterization of a Third Interstellar Object: 3I/ATLAS" [arXiv:2507.02757]
Abraham Loeb
The interstellar object 3I/ATLAS shows a weak cometary activity. Its brightness suggests a maximum radius of ~10km (A/0.05)^{-1/2} for an asteroid with an albedo A. I show that int…