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China delays Chang'e-7 lunar mission to ensure absolute success
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Dense mega-Earth GJ 523b challenges planetary norms with thin atmosphere
Astronomers have identified GJ 523b, a dense 'mega-Earth' about 2.5 times Earth in size and around 23 times as massive, with a surprisingly thin atmosphere. Discovered by NASA’s TESS and examined with the WIYN telescope and the James Webb Space Telescope, the planet’s high density and lack of a thick gaseous envelope defy simple formation models, leading researchers to speculate that extreme heat or a past planetary collision stripped away much of its atmosphere and to push for a clearer definition of the Mega-Earth category.
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Webb Uncovers a Black Hole Star: The Cosmos’ New Object Class
Using the James Webb Space Telescope, scientists have identified MoM-BH*-1—a black hole star about 100,000 solar masses formed less than 700 million years after the Big Bang. Its center is a black hole that relentlessly accretes matter, emitting about 100 billion times more energy than a typical star, while a dense gas shell makes it appear star-sized. The finding suggests other so-called 'Little Red Dots' could be black hole stars, potentially reshaping our understanding of early galaxies and black hole growth.
Pluto’s atmosphere begins to freeze out as it drifts farther from the Sun
Astronomers report Pluto’s nitrogen-rich atmosphere is starting to freeze out as it moves away from the Sun, with atmospheric pressure dropping about 16% between mid-2021 and 2023. Pluto’s surface runs at roughly -382°F while the upper atmosphere sits around -333°F, conditions that favor frost formation as the air cools. Observations of ten stellar occultations from 2017–2023 show haze in the lower atmosphere settling toward lower latitudes as pressure falls. The findings, led by Amanda Sickafoose, suggest the atmosphere will not be fully frozen by aphelion (2114) but should rebuild somewhat as Pluto travels back toward the Sun. The study was published July 31 in the Planetary Science Journal.
JWST imagery hints the 'little red dots' are distant galactic cores, not new objects
New JWST imagery suggests the enigmatic 'little red dots' seen in deep-field images are likely ordinary distant galaxies whose bright centers outshine the rest, rather than a new class of object. Researchers used the nearby spiral galaxy Saguaro (about 3.3 billion years after the Big Bang) to model how such galaxies would look at earlier epochs, showing that LRDs could be early-universe galaxies with active nuclei and offering clues about how galaxies and their central black holes grew over cosmic time.
Danuri Captures SpaceX Moon Impact, Sparking Debris Responsibility Debate
South Korea’s Danuri lunar orbiter photographed the Moon before and after a defunct SpaceX Falcon 9 upper stage slammed into the lunar surface at about 5,400 mph, leaving a fresh dark scar near Einstein crater. Danuri’s eight imaging sessions provide data on impact dynamics and ejecta, with NASA’s Lunar Reconnaissance Orbiter likely to image the site again. The event raises questions about who is responsible for deep-space debris and the lack of end-of-life disposal standards beyond Earth orbit.
Danuri Reveals Moon Crash Site From SpaceX Falcon 9 Collision
South Korea’s Danuri orbiter released before-and-after images showing the impact crater created when SpaceX’s Falcon 9 upper stage collided with the Moon near Einstein Crater at about 5,400 mph on Aug. 5, 2026. NASA’s Lunar Reconnaissance Orbiter is expected to inspect the site next week, with officials noting the event poses no danger to Earth.
Global telescope network captures early shock-breakout of a colossal stellar explosion
Astronomers worldwide recorded the first moments of a 500‑million‑light‑year‑distant Type Ic broad‑lined supernova from a Wolf–Rayet progenitor, catching the faint X-ray shock breakout and mapping the star’s pre‑explosion surroundings; the event showed jets but no observed gamma‑ray burst, suggesting a possible choking of the jet, with Rubin Observatory and other facilities continuing long‑term follow‑up observations.
Cosmic Acceleration May Be an Illusion, Cosmology Faces a Fresh Challenge
New analysis of Type Ia supernovae data, with progenitor-age corrections from the Pantheon+ catalog, suggests the universe’s expansion may be mildly anisotropic and not accelerating uniformly in all directions. If younger supernova progenitors are fainter after standardization, distant observations could mimic acceleration, meaning the apparent cosmic acceleration could be a local, directional effect tied to our motion through the cosmos. This challenges the isotropy assumed in ΛCDM and raises doubts about dark energy's role, while also intersecting with the ongoing Hubble tension between local and early-universe expansion rates.
Juno uncovers buried heat beneath Io's volcanic crust
NASA’s Juno spacecraft used its Microwave Radiometer to measure heat beneath Io’s surface for the first time, finding temperatures rise sharply within a few feet of the crust (more than 40°F). The findings suggest a thin, porous surface layer and heat moving through Io’s crust that could result from conduction or cooling lava flows, offering new insights into tidal heating that powers Io’s volcanism and potentially informing heat processes on other worlds with buried oceans; future high-resolution observations could distinguish between conduction and lava-driven heating.
Twin Meteor Showers Light Up the Sky Tonight: How to Catch Alpha Capricornids and Southern Delta Aquariids
Two meteor showers—the Alpha Capricornids and Southern Delta Aquariids—are expected to peak tonight into the early morning hours, with the Delta Aquariids producing about 25 meteors per hour and the Alpha Capricornids around 5. A full Moon may wash out fainter meteors, but bright fireballs could still be visible. No special gear is needed; view from dark, low-light skies away from cities and preferably after midnight. The Delta Aquariids run through Aug. 23 and the Alpha Capricornids through Aug. 15, according to AMS/NASA.
NASA’s Swift Rescue Dives Into Crisis as Space Tug Loses Control
NASA’s risky plan to rescue its aging Swift gamma-ray observatory with the LINK space tug is unraveling after LINK begins tumbling, with preliminary findings showing two of its three reaction wheels are inoperable and its cold‑gas thruster system degraded. Ground teams can still communicate with Swift, but engineers must halt LINK’s spin before reassessing next steps; the mission cost was about $30 million, and time is running out as Swift could re-enter the Earth’s atmosphere in the coming months.