Tuesday, December 23, 2025

Webb Spots the 'Smoke' from Crashing Exocomets Around a Nearby Star

Artist's conception of a series of exocomets approaching a newly formed star. Credit - NASA / ESA / A. Feild / G. Bacon (STScI)

The James Webb Space Telescope (JWST) was involved in yet another first discovery recently available in pre-print form on arXiv from Cicero Lu at the Gemini Observatory and his co-authors. This time, humanity’s most advanced space telescope found UV-fluorescent carbon monoxide in a protoplanetary debris disc for the first time ever. It also discovered some features of that disc that have considerable implications for planetary formation theory.



Monday, December 22, 2025

Russia's Plans for a Space Station Includes "Recycling" its ISS Modules

Next-generation spacecraft to replace the Soyuz spacecraft approached Russia Orbital station. Credit: RoscosmosTV (screengrab)/Inside Outer Space

Oleg Orlov, Director of the Institute of Biomedical Problems at the Russian Academy of Sciences (RAS), announced that the Russian Orbital Station (ROS) will include the modules that make up the Russian Orbital Segment of ISS.



The Solar System Loses an Ocean World

Artist's impression of the Cassini spacecraft at Titan. NASA/JPL-Caltech.

Saturn’s largest moon, Titan, may not have a subsurface ocean after all. That’s according to a re-examination of data captured by NASA’s Cassini mission, which flew by Titan dozens of times starting in 2004. By 2008, all the evidence suggested a subsurface ocean of liquid water waited beneath Titan’s geologically complex crust. But the latest analysis says the interior is more likely to be made of ice and slush, albeit with pockets of warm water that cycle from core to surface.



Five New Planets and the Battle for Their Atmospheres

A planet suffering from the flare of a red dwarf star. Credit - NASA/ESA/D. Player (STScI)

One of the primary goals of the James Webb Space Telescope (JWST) is to detect atmospheres around exoplanets, to try to suss out whether or not they could potentially support life. But, in order to do that, scientists have to know where to look, and the exoplanet has to actually have an atmosphere. While scientists know the location of about 6000 exoplanets currently, they also believe that many of them don’t have atmospheres and that, of the ones that do, many aren’t really Earth-sized. And of those, many are around stars that are too bright for our current crop of telescopes to see their atmosphere. All those restrictions mean, ultimately, even with 6000 potential candidates, the number of Earth-sized ones that we could find an atmosphere for is relatively small. So a new paper available on arXiv from Jonathan Barrientos of Cal Tech and his co-authors that describes five new exoplanets around M-dwarf stars - two of which may have an atmosphere - is big news for astrobiologists and exoplanet hunters alike.



Sunday, December 21, 2025

ESA's JUICE Mission Reveals More Activity from 3I/ATLAS

This image of 3I/ATLAS was snapped with the NavCam aboard the ESA's JUpiter Icy Moon Explorer (JUICE). Credit: ESA/Juice/NavCam

During November 2025, ESA’s Jupiter Icy Moons Explorer (JUICE) used five of its science instruments to observe 3I/ATLAS. The instruments collected information about how the comet is behaving and what it is made of.



Engineering the First Reusable Launchpads on the Moon

Artist's conception of an autonomous robot constructing a lunar landing pad. Credit - Ketan Vasudeva & M. Reza Emami

Engineers need good data to build lasting things. Even the designers of the Great Pyramids knew the limestone they used to build these massive structures would be steady when stacked on top of one another, even if they didn’t have tables of the compressive strength of those stones. But when attempting to build structures on other worlds, such as the Moon, engineers don’t yet know much about the local materials. Still, due to the costs of getting large amounts of materials off of Earth, they will need to learn to use those materials even for critical applications like a landing pad to support the landing / ascent of massive rockets used in re-supply operations. A new paper published in Acta Astronautica from Shirley Dyke and her team at Purdue University describes how to build a lunar landing pad with just a minimal amount of prior knowledge of the material properties of the regolith used to build it.



Saturday, December 20, 2025

Astronomers Find the First Compelling Evidence of "Monster Stars" in the Early Universe

Quasar SDSS J0100+2802, EIGER (Emission-line galaxies and Intergalactic Gas in the Epoch of Reionization) Survey. Credit: NASA/ESA/CSA/STScI/ETH Zurich/NCSU

Using the James Webb Space Telescope, a team of international researchers has discovered chemical fingerprints of gigantic primordial stars that were among the first to form after the Big Bang.