How did hot Jupiters end up orbiting so close to their stars, thus earning their moniker? This is what a recent study published in The Astronomical Journal hopes to address as a team of researchers from The University of Tokyo investigated the orbital evolution of hot Jupiters ended, specifically regarding where their orbits started before orbiting so close to their stars. This study has the potential to help scientists better understand the formation and evolution of exoplanets and what this could mean for finding life beyond Earth.

Scientists have discovered that moons could theoretically orbit all seven planets in the TRAPPIST-1 system despite the complex gravitational environment. Using computer simulations, a team of researchers have mapped stable zones where satellites could survive around each planet. They found that moons can remain stable up to about 40-45% of each planet’s sphere of gravitational influence. The neighbouring planets squeeze these stable zones slightly inward compared to isolated planets, but the effect is modest. Long term calculations suggest only tiny moons, roughly one ten millionth the mass of Earth, could survive the immense tidal forces.

Researchers have been trying to look at interstellar object 3I/ATLAS from every conceivable angle. That includes very unconventional ones. Recently, while 3I/ATLAS passed out of view of the Earth, it moved into a great vantage point for one of our interplanetary probes. Europa Clipper, whose main mission is to explore Jupiter’s active moon, turned its gaze during its six year journey back towards the center of the solar system and observed 3I/ATLAS as it was reaching its perihelion, and out of sight from the Earth.

A team led by the Institute of Space Sciences (ICE-CSIC) analyzed samples of C-type asteroids in a recent study. Their findings support the idea that these asteroids can serve as a crucial source of materials if and when asteroid mining is realized.

Supermassive black holes have a reputation for devouring everything in sight, but new observations from the Atacama Large Millimetre/submillimetre Array reveal they can be surprisingly picky eaters. Even when galaxy mergers deliver enormous amounts of cold molecular gas directly to a black hole’s doorstep, many choose to nibble rather than gorge raising questions about what triggers feeding episodes. The discovery suggests black hole growth during galaxy collisions may be far more inefficient and episodic than we previously thought.

A joint research team from South Korea has developed a fascinating wheel inspired by origami and Da Vinci bridge principles that could unlock access to the Moon’s most dangerous and scientifically useful terrain. The wheel expands from 230 mm to 500 mm in diameter on demand, allowing small rovers to navigate steep lunar pits and lava tube entrances that would trap conventional vehicles.

Astronomers using the Hubble Space Telescope have discovered the largest planet forming disk ever observed around a young star, stretching nearly 40 times the diameter of our Solar System. Nicknamed “Dracula’s Chivito” for its hamburger like appearance when viewed edge on, this massive disk reveals an unexpectedly chaotic and asymmetric structure with wisps of material extending far above and below its central plane. The discovery offers an unprecedented window into how planets might form in extreme environments, challenging previous assumptions about the orderly nature of planetary nurseries.

At the end of their lives, most satellites fall to their death. Many of the smaller ones, including most of those going up as part of the “mega-constellations” currently under construction, are intended to burn up in the atmosphere. This Design for Demise (D4D) principle has unintended consequences, according to a paper by Antoinette Ott and Christophe Bonnal, both of whom work for MaiaSpace, a company designing reusable launch vehicles for the small satellite market.

Launched in March, NASA’s SPHEREx space telescope has completed its first infrared map of the entire sky in 102 colors. This map will enable 3D distance measurements to other galaxies and allow astronomers to measure the influence of Cosmic Inflation on the large-scale structure of the Universe.

Solar sails have some major advantages over traditional propulsion methods - most notably they don’t use any propellant. But, how exactly do they turn? In traditional sailing, a ship’s captain can simply adjust the angle of the sail itself to catch the wind at a different angle. But they also have the added advantage of a rudder, which doesn’t work when sailing on light. This has been a long-standing challenge, but a new paper available in pre-print from arXiv, by Gulzhan Aldan and Igor Bargatin at the University of Pennsylvania describes a new technique to turn solar sails - kirigami.

Even most rocket scientists would rather avoid hard math when they don’t have to do it. So when it comes to figuring out orbits in complex three-body systems, like those in Cis-lunar space, which is between the Earth and the Moon, they’d rather someone else do the work for them. Luckily, some scientists at Lawrence Livermore National Laboratory seems to have a masochistic streak - or enough of an altruistic one that it overwhelmed the unpleasantness of doing the hard math - to come up with an open-source dataset and software package that maps out 1,000,000 cis-lunar orbits.

Ready for another amazing year of skywatching? 2025 was a wild year, with a steady parade of comets knocking on naked eye visibility, and one extra special interstellar comet, 3I/ATLAS. The sky just keeps on turning into 2026. Watch for mutual eclipse season for the major moons of Jupiter, as the moons pass one if front of the other. The ongoing solar cycle is also still expected to be active into 2026, producing sunspots space weather and more. And (finally!) we’ll see the return of total solar eclipses on August 12th, as umbral shadow of the Moon crosses Greenland, Iceland and northern Spain.

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.

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.

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.

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.

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.

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.

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.

During the deployment of new space telescopes that are several critical steps each has to go through. Launch is probably the one most commonly thought of, another is “first light” of all of the instruments on the telescope. Ultimately, they’re responsible for the data the telescope is intended to collect - if they don’t work properly then the mission itself it a failure. Luckily, the Interstellar Mapping and Acceleration Probe (IMAP) recently collected first light on its 10 primary instruments, and everything seems to be in working order, according to a press release from the Southwest Research Institute who was responsible for ensuring the delivery of all 10 instruments went off without a hitch.