Astronomy
151 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.
ALMA Reveals Persistent Hotspots on Betelgeuse's Turbulent Surface
Astronomers using the Atacama Large Millimeter/submillimeter Array have mapped Betelgeuse's surface in unprecedented detail, revealing long-lived hotspots and complex plasma flows that challenge current models of red supergiant stars
Earth-Facing Sunspot Fires M6.9 Flare and CME Toward Earth
A highly active sunspot has produced an M6.9-class solar flare and launched a coronal mass ejection toward Earth, raising the possibility of geomagnetic disturbances and enhanced auroral activity later this week
ISS Spacewalk Removes Failed Antenna but Leaves Replacement Unfinished
ESA astronaut Sophie Adenot and NASA astronaut Anil Menon spent over six hours outside the International Space Station on August 18, 2026, removing a malfunctioning antenna during a technically demanding extravehicular activity
Pluto's Planet Status Revisited as Astronomers Debate IAU Definition
Two decades after Pluto was reclassified as a dwarf planet, new observations and ongoing debate among planetary scientists are challenging the criteria that define what counts as a planet in our solar system
Milky Way's Oldest Known Merger Leaves Lasting Mark at Galactic Center
Astronomers have identified evidence of the Milky Way's earliest known galactic merger, using Hubble Space Telescope data to trace ancient globular clusters and reveal a collision that shaped the galaxy's core nearly 12 billion years ago
NASA Backs 18 Advanced Concepts for Future Space Missions
NASA has awarded funding to 18 early-stage technology proposals, supporting research into new mission concepts including lunar cave exploration, exoplanet imaging, and distributed probes for Saturn's rings
Seventeen Spacecraft Reveal Asymmetric Structure in Solar Ejection
A coronal mass ejection observed in December 2024 was tracked by 17 spacecraft across the solar system, revealing an unexpected double-lobed structure with significant speed differences between its components
Dark Energy Camera Reveals Ancient Stars and Stellar Birth in Corona Australis
A new image from the Dark Energy Camera on the Blanco 4-meter Telescope captures the Corona Australis Molecular Cloud, highlighting both newborn stars and one of the oldest star clusters in the Milky Way
UFO Claims Face Scrutiny as New Book Examines Evidence and Uncertainty
A new book by Adam Kirsch investigates the enduring fascination with UFOs, comparing eyewitness accounts to scientific standards and exploring why concrete evidence remains elusive despite decades of reports
Fading Radio Galaxies Reveal What Happens When Black Holes Go Quiet
A new study using MeerKAT, LOFAR, and the Jansky Very Large Array has identified a population of galaxies with fading radio lobes, offering insight into the late stages of supermassive black hole activity
China Prepares Chang'e 7 for Complex Lunar South Pole Mission
China's Chang'e 7 spacecraft, launching in August 2026, will deploy an orbiter, lander, rover, and hopper to investigate the Moon's south pole, targeting water ice and testing new navigation and international science payloads
Mars Express Reveals Detailed 3D View of Schiaparelli Crater
ESA's Mars Express orbiter has produced a new high-resolution 3D visualization of Schiaparelli Crater and the Southern Highlands, offering fresh insight into ancient Martian water activity and surface evolution
Satellite Data Guides Eclipse Cruise to Clear Skies in 2026
A Mediterranean eclipse cruise relied on real-time satellite weather data to avoid clouds and secure a clear view of the 2026 total solar eclipse, demonstrating the critical role of geostationary satellites in astronomical observation planning
Deepest Partial Lunar Eclipse in Years Approaches on August 27-28
A deep partial lunar eclipse will occur on August 27-28, 2026, with 96% of the Moon entering Earth's umbra. The event will be visible across the Americas, Europe, Africa, and western Asia, offering a rare opportunity for skywatchers.
Webb Telescope Reveals Early Galaxies Are Richer in Small Stars
Astronomers using the James Webb Space Telescope have detected a higher proportion of faint, low-mass stars in ancient galaxies, suggesting these early systems are more massive than previously estimated
Richat Structure's Concentric Rings Imaged from the International Space Station
A new photograph from the International Space Station captures the Richat Structure, a 40-kilometer-wide geologic formation in Mauritania, revealing its striking concentric rings as seen from orbit
Webb Telescope Spots Candidate Black Hole Star in Early Universe
Astronomers using the James Webb Space Telescope have identified a luminous, solar-system-sized object from 660 million years after the Big Bang, offering the strongest evidence yet for a hypothesized 'black hole star' class.
Fastest Known Star Orbits Milky Way's Black Hole in Under 9 Years
Astronomers using the Very Large Telescope Interferometer have identified S301, a star orbiting Sagittarius A* at record speed, offering a new opportunity to test general relativity near the Milky Way's supermassive black hole
Hubble Data Reveals Ancient Milky Way Merger with Dwarf Galaxy
Astronomers have identified evidence that the Milky Way merged with a dwarf galaxy called LKH about 12 billion years ago, using globular cluster data from the Hubble Space Telescope and extending the timeline of our galaxy's early evolution
Total Solar Eclipse Observed Over Greenland's Remote Fjords
A rare total solar eclipse was observed from the deck of a research vessel in East Greenland, offering scientists and eclipse chasers a unique view of totality above icebergs and glaciers under clear Arctic skies
Five Essential Night Sky Targets for Binocular Astronomy
Astronomers highlight five celestial objects and regions that reveal striking detail through binoculars, from the Moon's shifting shadows to the Andromeda Galaxy's faint glow, offering accessible entry points for skywatchers of all experience levels
Discovery of GJ 523b Challenges Theories of Rocky Planet Formation
Astronomers have identified GJ 523b, a rocky exoplanet over 23 times Earth's mass, using TESS and ground-based spectroscopy, raising new questions about how such dense worlds form and retain-or lose-their atmospheres
ISS Spacewalk Removes Failed Antenna but Replacement Delayed
NASA astronaut Anil Menon and ESA's Sophie Adenot removed a nonfunctional antenna from the International Space Station during a six-hour spacewalk, but time constraints postponed installation of the replacement hardware
Sophie Adenot Becomes First French Woman to Walk in Space
European Space Agency astronaut Sophie Adenot is set to conduct a 6.5-hour spacewalk outside the International Space Station, marking the first time a French woman has participated in an extravehicular activity
Helix Nebula Reveals How Dead Stars Return Material to the Galaxy
Astronomers using the MOTHRA instrument have observed the Helix Nebula dispersing its outer layers into the interstellar medium, providing direct evidence of stellar material recycling that will enrich future generations of stars
Deneb and Cygnus: Tracing Stellar Remnants and a Nearby Black Hole
Astronomers use optical and X-ray observations to study Deneb, the Cygnus Loop supernova remnant, and the black hole Cygnus X-1, revealing the complex structure of the Cygnus constellation and its hidden extremes
Hubble Reveals Ancient Dwarf Galaxy Merger in Milky Way's Early History
Astronomers using the Hubble Space Telescope have identified evidence of a major merger between the young Milky Way and a dwarf galaxy nearly 12 billion years ago, pushing the timeline of our galaxy's assembly further into the past
NASA Telescopes Map Energy Loss in Tarantula Nebula
A composite image from Chandra, Webb, and Hubble reveals how the Tarantula Nebula in the Large Magellanic Cloud is shaped by young stars and energetic gas, offering new insight into star formation and nebular evolution
Trillion-Mile Gas Streamer Tilts Planet-Forming Disk in GW Orionis
Astronomers using ALMA have observed a massive gas streamer disrupting the planet-forming disk around the young triple-star system GW Orionis, offering new insight into the origins of misaligned planetary orbits
Webb Telescope Reveals Three Supermassive Black Holes in Distant Galaxy
Astronomers using the James Webb Space Telescope have identified three supermassive black holes within a single galaxy seen as it was 12.5 billion years ago, offering new evidence for rapid black hole growth through mergers in the early universe
Part 1 of 6