Astronomy
81 reportsPhotometry and astronomical surveys reveal where results converge and where they diverge. The comparison asks what spectra reveal and how observations are calibrated, showing how sparse measurements or incomplete records limit certainty.
SpaceX Launches Three BlueBird Satellites for Direct-to-Cell Network
A Falcon 9 rocket is set to deploy three AST SpaceMobile BlueBird satellites from Cape Canaveral, expanding a low Earth orbit constellation designed to deliver broadband directly to standard smartphones.
Radio Surveys Reveal Millions More Milky Way Stars Searched for SETI
A new analysis using the Besançon Galactic Model suggests that radio telescopes have surveyed over 6 million stars for extraterrestrial signals, far exceeding previous estimates based on star catalogues
Neptune's Inner Moons May Preserve Debris From Ancient Ice Worlds
Infrared observations from the James Webb Space Telescope reveal unexpected clay minerals on two small Neptunian moons, supporting a debris-origin scenario while leaving the fate of their original ice unresolved
Europa Clipper May Miss Ocean Water Rising Through Europa's Ice
Computer simulations suggest turbulent water rising through Europa's ice would freeze its pathways shut, making shallow surface pools poor indicators of the moon's buried ocean
How a Falcon 9 Upper Stage Ended Up Bound for the Moon
A Falcon 9 upper stage abandoned in a high Earth orbit is expected to hit the Moon on August 5, 2026, after gravity and solar activity gradually altered its trajectory
Hubble Finds Andromeda's Star Formation Is Winding Down
A Hubble analysis of about 200 million stars shows Andromeda has sharply reduced its star-making rate over the past 500 million years, while NASA's Roman telescope prepares to map the galaxy more completely
Aug. 12, 2026, brings an unusually complete night of skywatching
On Aug. 12, 2026, observers can follow a solar eclipse by day, then watch Venus, the Perseid meteor shower and the Milky Way under a nearly moonless sky
NASA's Roman Telescope Will Carry 1.35 Million Names to L2
A memory card carrying 1,350,144 names has been mounted on NASA's Nancy Grace Roman Space Telescope ahead of its planned launch to an orbit about one million miles from Earth
Mercury and Jupiter Meet as Venus Rules August Skies
Venus reaches its widest evening separation from the Sun on Aug. 15, while Mercury and Jupiter pass within 0.6 degrees before dawn in a difficult but rewarding conjunction
How to Watch the 2026 Solar Eclipse Safely in the UK
The August 12, 2026, eclipse will cover about 90% of the Sun in parts of the UK. Here is how to choose certified eye protection and compare viewing options without risking permanent damage
Apollo 15's Lunar Rover Turned Moonwalking Into Exploration
Apollo 15's Lunar Roving Vehicle gave astronauts their first way to travel extensively across the moon's surface, extending scientific exploration beyond the immediate landing site in July 1971
Triple-Lobed Asteroid 44 Nysa Imaged With Orbiting Moon in Asteroid Belt
Astronomers have resolved asteroid 44 Nysa as the first known triple-lobed body in the main belt, using adaptive optics on major ground-based telescopes. The object also hosts a small moon, raising new questions about asteroid formation and evolution.
Astronomers Link Two Supernova Remnants to a Single Binary Star System
A faint supernova remnant near the Jellyfish Nebula has been identified as the likely companion explosion from a binary star system, based on 16 years of gamma-ray data and multiwavelength observations
Galileo's 1610 Observation of Saturn's Rings Changed Planetary Science
In July 1610, Galileo Galilei used a newly invented telescope to observe Saturn, recording features that would later be identified as the planet's rings-a finding that reshaped our understanding of planetary systems
Webb Telescope Maps Dusty Structures in Active Galaxy Centaurus A
NASA's James Webb Space Telescope has captured a detailed mid-infrared image of Centaurus A, revealing complex dust lanes and energetic activity in this nearby galaxy using its MIRI instrument
July's Buck Moon Captured Worldwide Amid Wildfires and Atmospheric Haze
Astronomers and photographers documented the July Buck Moon on July 29, 2026, as it rose through wildfire smoke and atmospheric haze, producing striking images across multiple continents and urban skylines
NASA Prepares Roman Space Telescope for Early Launch to L2 Orbit
NASA's Nancy Grace Roman Space Telescope is set for launch on August 30, aiming to deliver wide-field infrared surveys and exoplanet imaging from a stable orbit beyond the Moon
Chinese Long March 3B Rocket Struck by Lightning Survives Launch
A Long March 3B rocket was hit by lightning seconds after liftoff from Xichang Satellite Launch Center, yet continued its ascent and successfully deployed a geostationary relay satellite to support China's Tiangong space station
Salyut 6 Space Station Deorbited After Five Years in Orbit
The Soviet Salyut 6 space station, operational since 1977, was deliberately deorbited on July 29, 1982, after supporting multiple long-duration missions and pioneering new space station technologies
SpaceX Starship Remains Afloat in Indian Ocean After Test Splashdown
SpaceX's Starship Version 3 upper stage was photographed floating intact in the Indian Ocean five days after its July 24 flight test, offering a rare look at the vehicle's post-splashdown condition and raising questions about rapid reusability
NASA's Swift Boost Mission Faces Setback After Spacecraft Malfunction
NASA's Swift Boost mission, launched to extend the life of the Neil Gehrels Swift Observatory, has encountered a critical control issue with its LINK spacecraft, raising uncertainty about the planned orbital rescue operation
Webb Telescope Study Links Little Red Dots to Black Hole Activity
Astronomers using the James Webb Space Telescope have traced the origins of mysterious 'little red dots' in deep space, suggesting these compact sources are linked to phases of intense supermassive black hole activity
July's Buck Moon Aligns with Venus, Saturn, Mars, and Mercury
The full Buck Moon rises on July 29, accompanied by a rare alignment of Venus, Saturn, Mars, and Mercury. Observers can witness this planetary parade with the naked eye or optical instruments as twilight fades
Chandra X-ray Observatory reveals hot gas from early quasar
NASA's Chandra X-ray Observatory has detected extremely hot gas surrounding a distant, radio-quiet quasar, offering new insight into the formation of galactic cluster atmospheres in the early universe
Dwarf Galaxy DF9 Found Without Dark Matter After Cosmic Collision
Astronomers using the Keck Cosmic Web Imager have identified a faint dwarf galaxy, DF9, that appears to lack dark matter, supporting the idea that galactic collisions can separate dark and visible matter
Milky Way Disk May Have Flipped, Altering Solar System's Orbit
Supercomputer simulations suggest the Milky Way's spiral disk may have rotated by 90 degrees in the distant past, potentially changing the solar system's path and explaining the galaxy's unusually slow stellar halo rotation
NASA Prepares Roman Space Telescope for 2026 Launch to L2 Orbit
NASA has fueled the Roman Space Telescope, a next-generation infrared observatory scheduled for launch in August 2026, aiming to collect hundreds of terabytes of cosmic data annually and expand studies of dark matter, dark energy, and exoplanets
Astrophotographer Captures ISS Passing Venus in Daylight Sky
A rare daylight image shows the International Space Station appearing close to Venus, recorded by AJ Smadi using a specialized telescope and camera setup in Washington state
Radio Telescopes Track Space Debris in Geostationary Orbit
Engineers have demonstrated that radio telescopes can detect and monitor space debris in geostationary orbit, using radar signals reflected from distant objects beyond the reach of conventional tracking methods
VLT Reveals Strongest Evidence Yet for Betelgeuse's Companion Star
Astronomers using the Very Large Telescope have obtained the clearest direct image to date of a faint companion star near Betelgeuse, advancing a century-long search for evidence that the red supergiant is part of a binary system
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