Galaxies
Optical telescopes obtain long-term monitoring results of flux variability in blazars  PHYS.ORG · 3 days
Blazars are a special kind of rare active galactic nuclei. They are currently the most likely candidates for high-energy neutrinos. Their relativistic jets may be the... more
Warped space-time to help WFIRST find exoplanets  PHYS.ORG · 3 days
NASA's Wide Field Infrared Survey Telescope (WFIRST) will search for planets outside our solar system toward the center of our Milky Way galaxy, where most stars are. Studying the properties of exoplanet worlds will... more
High Altitude Water Cherenkov observatory tests speed of light  PHYS.ORG · 3 days
New measurements confirm, to the highest energies yet explored, that the laws of physics hold no matter where you are or how fast you're moving. Observations of record-breaking gamma rays... more
New method predicts which black holes escape their galaxies  PHYS.ORG · 3 days
Shoot a rifle, and the recoil might knock you backward. Merge two black holes in a binary system, and the loss of momentum gives a similar recoil—a "kick"—to the merged... more
Image: Hubble hooks a one-arm galaxy  PHYS.ORG · 4 days
NGC 4618 was discovered on April 9, 1787, by the German-British astronomer William Herschel, who also discovered Uranus in 1781. Only a year before discovering NGC 4618, Herschel theorized that the "foggy" objects astronomers were seeing... more
TESS Discovers Its First Thick-Disk Exoplanet  SCI-NEWS.COM · 4 days
Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) have spotted an Earth-sized planet orbiting LHS 1815, a star in the thick disk of our... more
Free-floating stars in the Milky Way's bulge  PHYS.ORG · 4 days
The path of a light beam is bent by the presence of mass, as explained by General Relativity. A massive body can therefore act like a lens—a so called "gravitational lens"—to distort the image... more
Hubble Snaps Stunning Image of NGC 4651  SCI-NEWS.COM · 4 days
The NASA/ESA Hubble Space Telescope has captured a detailed image of a spiral galaxy called NGC 4651. NGC 4651 lies approximately 93... more
ALMA resolves gas impacted by young jets from supermassive black hole  PHYS.ORG · 7 days
Astronomers obtained the first resolved image of disturbed gaseous clouds in a galaxy 11 billion light-years away by using the Atacama Large Millimeter/submillimeter Array (ALMA). The... more
ALMA resolves gas impacted by young jets from supermassive black hole  SCIENCE DAILY · 7 days
Astronomers obtained the first resolved image of disturbed gaseous clouds in a galaxy 11 billion light-years away by using the Atacama Large Millimeter/submillimeter Array (ALMA). The... more
Scientists use the Milky Way to hunt for dark matter  LIVE SCIENCE · 7 days
Scientists studying a mysterious signal from far-off galaxies didn't find dark matter as they'd hoped. But the inventive new technique they used to detect this strange signal, which... more
The dark matter interpretation of the 3.5-keV line is inconsistent with blank-sky observations  Science Magazine · 1 week
Observations of nearby galaxies and galaxy clusters have reported an unexpected x-ray emission line around 3.5 kilo–electron volts (keV). Proposals to explain... more
Distant 'quasar tsunamis' are ripping their own galaxies apart  LIVE SCIENCE · 1 week
The winds and radiation blowing out of quasars — the most energetic objects in the universe — can kill star formation galaxy-wide, new research shows. more
Searching for the first stars and galaxies  PHYS.ORG · 1 week
Astrophysicists, telescopes, supercomputers, and software engineers have joined forces to search for signals from the early Universe. more
Chinese astronomers detect gamma-ray emission from two star-forming galaxies  PHYS.ORG · 1 week
Astronomers from Nanjing University in China have detected gamma ray emission from two star-forming galaxies designated M33 and Arp 299. The finding, which is detailed in a paper published March... more
We might be living in a gigantic, intergalactic bubble  LIVE SCIENCE · 1 week
The bubble concept could explain one of the strangest mysteries plaguing astrophysics: Why can't we tell how fast the universe is expanding? more
NGC 4618: Hubble Spots Spiral Galaxy with Single Arm  SCI-NEWS.COM · 2 weeks
The NASA/ESA Hubble Space Telescope has captured an amazing new photo of an unusual spiral galaxy called NGC... more
Expanding universe: We may be in a vast bubble  SCIENCE DAILY · 2 weeks
The few thousand galaxies closest to us move in a vast 'bubble' that is 250 million light years in diameter, where the average density of matter is half as large... more
Hubble Space Telescope Spots Quasar Tsunamis  SCI-NEWS.COM · 2 weeks
Quasars are the ultra-bright cores of distant active galaxies. These objects are among the most distant and luminous objects known. Their central engines are... more
Image: Hubble gazes at fluffy-looking galaxy  PHYS.ORG · 2 weeks
This image taken by the NASA/ESA Hubble Space Telescope shows the galaxy NGC 4237. Located about 60 million light-years from Earth in the constellation of Coma Berenices (Berenice's Hair), NGC 4237 is classified as a flocculent... more
Astronomers Discover Way to Get Sharp Images of Black Hole’s Photon Rings  SCI-NEWS.COM · 2 weeks
In April 2019, the Event Horizon Telescope (EHT) Collaboration released stunning images of the supermassive black hole in Messier 87, a giant elliptical galaxy... more
Dark matter and massive galaxies  PHYS.ORG · 2 weeks
About 85% of the matter in the universe is in the form of dark matter, whose nature remains a mystery, and the rest is of the kind found in atoms. Dark matter exhibits gravity but otherwise does not... more
Merger between two stars led to blue supergiant, iconic supernova  PHYS.ORG · 2 weeks
A supernova in a nearby galaxy may have originated from an explosion of a blue supergiant formed by the merger of two stars, simulations by RIKEN astrophysicists suggest.... more
A massive laboratory  ESA · 2 weeks
Image: This image shows a region of space called LHA 120-N150. It is a substructure of the gigantic Tarantula Nebula. The latter is the largest known stellar nursery in the... more
New telescope design could capture distant celestial objects with unprecedented detail  SCIENCE DAILY · 2 weeks
Researchers have designed a new camera that could allow hypertelescopes to image multiple stars at once. The enhanced telescope design holds the potential to obtain extremely... more
New telescope design could capture distant celestial objects with unprecedented detail  PHYS.ORG · 2 weeks
Researchers have designed a new camera that could allow hypertelescopes to image multiple stars at once. The enhanced telescope design holds the potential to obtain extremely... more
Universal interferometric signatures of a black holes photon ring  Science Magazine · 2 weeks
The Event Horizon Telescope image of the supermassive black hole in the galaxy M87 is dominated by a bright, unresolved ring. General relativity predicts that embedded within this image lies... more
Subsurface Mercury: Window to ancient, possibly habitable, volatile-rich materials  PHYS.ORG · 2 weeks
New research raises the possibility that some parts of Mercury's subsurface, and those of similar planets in the galaxy, once could have been capable of fostering prebiotic chemistry, and perhaps... more
Astronomers Discover First Pulsating White Dwarf in Eclipsing Binary System  SCI-NEWS.COM · 2 weeks
Astronomers have spotted a pulsating white dwarf star in the binary stellar system SDSS J115219.99+024814.4 (SDSS... more
NASA selects proposals to study volatile stars, galaxies, cosmic collisions  PHYS.ORG · 2 weeks
NASA has selected proposals for four missions that would study cosmic explosions and the debris they leave behind, as well as monitor how nearby stellar flares may affect... more
Image: Hubble investigates hungry galaxy  PHYS.ORG · 3 weeks
The subject of this image taken by the NASA/ESA Hubble Space Telescope, a spiral galaxy named NGC 1589, was once the scene of a violent bout of cosmic hunger pangs. As astronomers looked on, a poor, hapless star... more
Hubble Spots Flocculent Spiral Galaxy: NGC 4237  SCI-NEWS.COM · 3 weeks
The NASA/ESA Hubble Space Telescope has produced a spectacularly detailed image of the central region of the spiral galaxy NGC 4237. NGC... more
What can you do with spiral graph? Help understand how galaxies evolve  SCIENCE DAILY · 3 weeks
Researchers have developed a technique to accurately measure the winding arms of spiral galaxies that is so easy, virtually anyone can participate. This new... more
What can you do with spiral graph? Help understand how galaxies evolve  PHYS.ORG · 3 weeks
Spiral structure is seen in a variety of natural objects, ranging from plants and animals to tropical cyclones and galaxies. Now researchers at the... more
HaloSat offers galactic X-ray measurements on shoestring budget  PHYS.ORG · 3 weeks
Space research is an expensive business. Once a space-based instrument is proposed, researchers want to get as much value as possible from it. The proposed satellite quickly grows in instruments and capabilities.... more
Discovery points to the origin of mysterious ultraviolet radiation  nanowerk · 3 weeks
Billions of lightyears away, gigantic clouds of hydrogen gas produce a special kind of radiation, a type of ultraviolet light known as Lyman-alpha emissions. The enormous clouds emitting the light... more
Astronomers Discover Most Distant Blazar Yet  SCI-NEWS.COM · 3 weeks
Astronomers using the Large Binocular Telescope have found a blazar 13 billion light-years from Earth, making it officially the most distant blazar ever detected.... more
Study determines fundamental parameters of four open clusters  PHYS.ORG · 3 weeks
Using data from various astronomical surveys, a team of researchers from China and India has investigated four poorly studied open clusters in our Milky Way galaxy. The new study, presented in a... more
Astronomers use slime mold model to reveal dark threads of the cosmic web  PHYS.ORG · 3 weeks
A computational approach inspired by the growth patterns of a bright yellow slime mold has enabled a team of astronomers and computer... more
Astronomers use slime mold model to reveal dark threads of the cosmic web  SCIENCE DAILY · 3 weeks
A computational approach inspired by the growth patterns of a bright yellow slime mold has enabled a team of astronomers and computer... more
Radio galaxy NGC 3894 investigated with Fermi  PHYS.ORG · 3 weeks
Using the Large Area Telescope (LAT) onboard NASA's Fermi spacecraft, astronomers have investigated a nearby radio galaxy known as NGC 3894. Results of the study, presented in a paper published March 3, confirm the... more
Solved: The mystery of the expansion of the universe  PHYS.ORG · 3 weeks
The Earth, solar system, the entire Milky Way and the few thousand galaxies closest to us move in a vast "bubble" that is 250 million light years in diameter, where... more
Discovery points to origin of mysterious ultraviolet radiation  SCIENCE DAILY · 4 weeks
Lyman-alpha blobs (LABs) are gigantic clouds of hydrogen gas that produce a special type of ultraviolet light known as Lyman-alpha emission. An extremely powerful energy source must produce this radiation, but scientists... more
Discovery points to origin of mysterious ultraviolet radiation  PHYS.ORG · 4 weeks
Billions of lightyears away, gigantic clouds of hydrogen gas produce a special kind of radiation, a type of ultraviolet light known as Lyman-alpha emissions. The enormous clouds emitting the light are Lyman-alpha... more
New type of pulsating star discovered  PHYS.ORG · 4 weeks
A star that pulsates on just one side has been discovered in the Milky Way about 1500 light years from Earth. It is the first of its kind to be found and scientists expect to find... more
Image: Hubble spies galactic traffic jam  PHYS.ORG · 4 weeks
The barred spiral galaxy NGC 3887, seen here as viewed by the Wide Field Camera 3 aboard the NASA/ESA Hubble Space Telescope, lies over 60 million light-years away from us in the southern constellation of Crater... more
Astronomers identify nearly 3,000 candidate stars of a nearby star-forming galaxy  PHYS.ORG · 4 weeks
Using the United Kingdom Infrared Telescope (UKIRT) and NASA's Spitzer Space Telescope, astronomers have conducted photometric observations of a nearby star-forming galaxy known as NGC 6822.... more
Hubble Space Telescope Observes NGC 1589  SCI-NEWS.COM · 4 weeks
NASA has released a stunning image snapped by the NASA/ESA Hubble Space Telescope of the central region of the edge-on spiral galaxy NGC 1589.... more
New telescopes aim to detect extraterrestrial intelligence  PHYS.ORG · 4 weeks
A team of astronomers led by UC San Diego physicist Shelley Wright is deploying a pair of telescopes that will constantly search the nighttime sky for signals from intelligent life in our galaxy. more
Research investigates internal kinematics of the galaxy Mkn 938  PHYS.ORG · 4 weeks
Using the 6-meter telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS), astronomers have conducted a detailed study of the central part of the galaxy... more
New Candidate Particle for Dark Matter: D-Star Hexaquark  SCI-NEWS.COM · 4 weeks
Dark matter is the mysterious substance that makes up roughly a quarter of the Universe. There is strong indirect evidence... more
FermiMilky WayAndromedaTESSGravityExoplanetsSpace StationsBig BangJames WebbHubbleDark Matter/EnergyBlack Holes
MORE SCIENCE VIDEO
Warped space-time to help WFIRST find exoplanets
PHYS.ORG
New method predicts which black holes escape their galaxies
PHYS.ORG
FRESH SCIENCE