Stars and Stellar Evolution - Part 2
88 reports
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
NASA AI Model Predicts Sunspot Emergence Hours Before Surface Appearance
A NASA-led team has developed an AI model that analyzes acoustic and magnetic data from the Sun to forecast the emergence of active regions up to 12 hours in advance, offering new potential for space weather prediction
Webb Telescope Detects Water and Dust Near Milky Way's Black Hole
Astronomers using the James Webb Space Telescope have identified water and silicate dust around a dying star less than 0.6 light-years from Sagittarius A*, challenging assumptions about molecule survival near supermassive black holes
How to Observe a Shadow Cast by Venus in the Night Sky
Venus is nearing its peak brightness, offering a rare chance to observe whether the planet can cast a visible shadow. Astronomers explain the conditions and techniques needed to detect this subtle phenomenon.
Two Major Solar Eclipses Will Cross Three Continents in 2027
Astronomers are preparing for two rare solar eclipses in 2027, including a 'ring of fire' annular eclipse in February and an unusually long total solar eclipse in August, both visible across parts of South America, Africa, and Europe
Partial Solar Eclipse and Perseid Meteors Offer Rare Double Event
On August 12, observers across North America and Europe will witness a partial solar eclipse by day and the Perseid meteor shower by night, with optimal viewing conditions expected due to the new moon and clear skies in many regions
Comet 220P/McNaught Imaged in Unusual Bright Outburst Over Namibia
Astrophotographers in Namibia have captured a rare, vivid image of comet 220P/McNaught during a dramatic brightening event, using a 12-inch telescope and advanced camera equipment
eROSITA X-ray Survey Nearly Doubles Known High-Energy Cosmic Sources
The eROSITA X-ray telescope's latest data release catalogs nearly 2 million X-ray sources, offering an unprecedented view of black holes, galaxy clusters, and stellar remnants across the universe
Can Perseid Meteors Be Seen During the 2026 Total Solar Eclipse
Astronomers assess whether Perseid meteors will be visible during the total solar eclipse on August 12-13, 2026, as the Moon's shadow crosses Greenland, Iceland, and Spain, and explain the observational limits imposed by eclipse conditions
Inouye Solar Telescope Resolves Unprecedented Detail on Sun's Surface
The Inouye Solar Telescope has produced the highest-resolution images yet of the Sun's surface, revealing dynamic plasma structures and confirming a long-suspected fluid instability in solar plasma
Hubble Data Links Andromeda's Star Formation Slowdown to Nearby Galaxy
Astronomers using the Hubble Space Telescope have mapped a sharp decline in star formation across the Andromeda galaxy, with evidence pointing to gravitational influence from its smaller neighbor, M32
Partial Solar Eclipse and Perseid Meteor Shower Align on August 12
On August 12, skywatchers in North America and Europe will witness a partial solar eclipse by day and the peak of the Perseid meteor shower by night, offering a rare opportunity for coordinated solar and meteor observations under optimal conditions
Could Northern Lights Appear During the 2026 Total Solar Eclipse
Astronomers assess whether auroras could be visible during the total solar eclipse on August 12, 2026, as the path of totality crosses Greenland, Iceland, and northern Spain, and explain the physical limits on simultaneous observation
What to Expect During the Five Stages of the 2026 Total Solar Eclipse
On August 12, 2026, a total solar eclipse will cross parts of Europe and the Arctic, offering a rare opportunity to observe the Sun's atmosphere and dynamic eclipse phenomena as the Moon's shadow sweeps across Earth's surface
Crescent Moon and Mars Align Over Taurus Before Dawn on August 9
Observers in the Northern Hemisphere will see the crescent Moon pass close to Mars in the constellation Taurus before sunrise on August 9, offering a preview of the winter starscape and a rare opportunity for binocular viewing.
Sky-Watcher SolarQuest Mount Tracks the Sun for Solar Observing
The Sky-Watcher SolarQuest mount uses GPS and a solar sensor to automatically locate and track the Sun, offering a streamlined solution for small solar telescopes and eclipse viewing with minimal manual adjustment
Webb Telescope Reveals Young Star Cluster in Carina Nebula
A new image from the James Webb Space Telescope's NIRCam instrument captures a dense cluster of young stars in the Carina Nebula, offering fresh insight into stellar formation and the evolution of massive star groups
NASA's IXPE Observes Magnetar and Tests Quantum Vacuum Theory
NASA's IXPE telescope spent over 140 hours observing magnetar 1E 1547-5408, collecting X-ray polarization data that may reveal how empty space behaves in extreme magnetic fields
NASA Extends Voyager 2 Science With Power-Saving Maneuver
NASA engineers have implemented a new power management strategy on Voyager 2, allowing the spacecraft to continue collecting scientific data for at least another year as its nuclear power source declines
UK Set for Deepest Solar Eclipse in Over a Decade on August 12
On August 12, 2026, the UK will witness its most significant partial solar eclipse since 2015, with up to 98% of the Sun obscured in some regions. The event will be visible nationwide, though totality will not occur over British soil.
Solar Telescope Reveals Long-Predicted Plasma Vortices on Sun's Surface
High-resolution images from the Daniel K. Inouye Solar Telescope have captured thousands of plasma whirlpools on the Sun's surface, providing direct evidence for a phenomenon predicted over a century ago and offering new insight into solar atmospheric heating
NASA's IXPE Detects Signs of Quantum Vacuum Effect Near Magnetar
NASA's IXPE telescope has measured X-ray polarization from a magnetar, providing evidence consistent with a quantum electrodynamics effect predicted for nearly a century but never directly observed in space
Faint X-ray Flash Reveals Unusual Supernova in Nearby Galaxy
A brief X-ray signal detected by China's Einstein Probe in March 2026 has allowed astronomers to observe the earliest moments of a rare Type Ic supernova, offering new insight into how massive stars end their lives
NASA's PUNCH Mission Narrows Solar Storm Arrival Forecasts
NASA's PUNCH mission has enabled scientists to predict the arrival of a solar eruption near Earth with a margin of just 30 minutes, using continuous 3D imaging of coronal mass ejections as they travel through the inner solar system
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
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
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
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
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
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
NASA Prepares High-Altitude Observations for August 2026 Solar Eclipse
NASA-funded teams will use a high-altitude jet and scientific balloons to study the Sun's corona and atmospheric changes during the total solar eclipse crossing Greenland, Iceland, and Spain on August 12, 2026
What a Parsec Really Measures in Astronomy and Why It Matters
Astronomers use the parsec to measure vast cosmic distances, relying on precise observations of stellar parallax to determine how far away stars are from Earth. The unit is central to mapping the Milky Way and beyond
Part 2 of 3