Black Holes Merger
- All
- News
- Videos
-
Hubble Constant Puzzle Deepens as Supernova and CMB Measurements Clash
Astronomers are testing a new way to measure the universe’s expansion rate using the gravitational-wave background detected by NANOGrav. By treating the cosmic hum from merging supermassive black holes as a statistical “stochastic siren,” researchers hope to calculate the Hubble constant and help resolve the long-standing Hubble tension betwe...
-
Scientists Identify Rare Black Hole Merger in the Early Universe Using Gravitational Mapping
Astronomers have identified two merging supermassive black hole systems named Gondor and Rohan using a new method combining quasars and gravitational wave background signals. The discovery offers a fresh way to map black hole mergers and understand galaxy evolution and cosmic gravitational waves in a clearer and more systematic manner.
-
Astronomers Decode Mysterious Blast From Space That Lasted Seven Hours
The signal lasted for seven hours, and its duration and intensity suggest previously unknown processes in the universe.
-
NASA Spots Starquakes in a Red Giant Orbiting One of the Galaxy’s Quietest Black Holes
A red giant star orbiting a quiet black hole spins faster than expected, while internal vibrations reveal it is younger than its ancient chemistry suggests. These findings hint at a past stellar merger and challenge existing models of star evolution in low-metal environments. Future observations aim to confirm its complex cosmic history.
-
ESA’s Euclid Telescope Charts Over a Million Galaxies in Landmark First Data
ESA’s Euclid space telescope has captured about 1.2 million galaxies in its first year, providing one of the most detailed wide-field surveys of the universe ever made. Covering distances up to 10 billion light-years, Euclid’s clear, expansive imaging is helping astronomers study galaxy shapes, mergers, dwarf galaxy populations, and the role of...
-
Rare ‘Second-Generation’ Black Holes Detected, Proving Einstein Right Again
Scientists have detected two unusual black hole mergers showing signs of “second-generation” origins — meaning each large black hole likely formed from an earlier merger. The gravitational-wave signals also matched Einstein’s predictions on spinning black holes, offering fresh proof of general relativity and new insights into how black hole...
-
LIGO Detect Possible Second-Generation Black Holes with Extreme Spins
LIGO-Virgo-KAGRA observatories detected two extraordinary black hole collisions in late 2024—GW241011 and GW241110. The first involved a rapidly spinning black hole, while the second revealed one rotating opposite its orbit. These findings fit predictions for second-generation black holes, born from earlier mergers within crowded star clusters. T...
-
Black Hole Tears Star Apart, Sends Out Powerful Flares Six Months Later
Astronomers detected a black hole 650 million light-years away devouring a star and then erupting twice with powerful flares months later. Observed by the Zwicky Transient Facility and tracked by ALMA and the VLA, this rare off-centre event hints at a rogue black hole cast out from its host galaxy.
-
Black Hole Kicked Away? Gravitational Waves Reveal Einstein’s Ripples in Spacetime
Astronomers have, for the first time, measured the recoil speed and direction of a newborn black hole using gravitational waves. Data from the 2019 event GW190412 revealed the remnant shot away at 50 km/s. This breakthrough shows gravitational waves can reconstruct full 3D motion, offering new ways to connect black hole mergers with light signals.
-
New Black Hole Merger Gives Clearest Test of Einstein’s Relativity
LIGO has detected GW250114, the loudest gravitational-wave signal yet, marking ten years since its first breakthrough. The event confirmed Einstein’s relativity, Hawking’s horizon theorem, and Kerr’s spinning black hole model. By capturing the merger of two 32-solar-mass black holes, scientists gained the clearest view of black hole physics, ...
-
Hubble Constant Puzzle Deepens as Supernova and CMB Measurements Clash
Astronomers are testing a new way to measure the universe’s expansion rate using the gravitational-wave background detected by NANOGrav. By treating the cosmic hum from merging supermassive black holes as a statistical “stochastic siren,” researchers hope to calculate the Hubble constant and help resolve the long-standing Hubble tension betwe...
-
Scientists Identify Rare Black Hole Merger in the Early Universe Using Gravitational Mapping
Astronomers have identified two merging supermassive black hole systems named Gondor and Rohan using a new method combining quasars and gravitational wave background signals. The discovery offers a fresh way to map black hole mergers and understand galaxy evolution and cosmic gravitational waves in a clearer and more systematic manner.
-
Astronomers Decode Mysterious Blast From Space That Lasted Seven Hours
The signal lasted for seven hours, and its duration and intensity suggest previously unknown processes in the universe.
-
NASA Spots Starquakes in a Red Giant Orbiting One of the Galaxy’s Quietest Black Holes
A red giant star orbiting a quiet black hole spins faster than expected, while internal vibrations reveal it is younger than its ancient chemistry suggests. These findings hint at a past stellar merger and challenge existing models of star evolution in low-metal environments. Future observations aim to confirm its complex cosmic history.
-
ESA’s Euclid Telescope Charts Over a Million Galaxies in Landmark First Data
ESA’s Euclid space telescope has captured about 1.2 million galaxies in its first year, providing one of the most detailed wide-field surveys of the universe ever made. Covering distances up to 10 billion light-years, Euclid’s clear, expansive imaging is helping astronomers study galaxy shapes, mergers, dwarf galaxy populations, and the role of...
-
Rare ‘Second-Generation’ Black Holes Detected, Proving Einstein Right Again
Scientists have detected two unusual black hole mergers showing signs of “second-generation” origins — meaning each large black hole likely formed from an earlier merger. The gravitational-wave signals also matched Einstein’s predictions on spinning black holes, offering fresh proof of general relativity and new insights into how black hole...
-
LIGO Detect Possible Second-Generation Black Holes with Extreme Spins
LIGO-Virgo-KAGRA observatories detected two extraordinary black hole collisions in late 2024—GW241011 and GW241110. The first involved a rapidly spinning black hole, while the second revealed one rotating opposite its orbit. These findings fit predictions for second-generation black holes, born from earlier mergers within crowded star clusters. T...
-
Black Hole Tears Star Apart, Sends Out Powerful Flares Six Months Later
Astronomers detected a black hole 650 million light-years away devouring a star and then erupting twice with powerful flares months later. Observed by the Zwicky Transient Facility and tracked by ALMA and the VLA, this rare off-centre event hints at a rogue black hole cast out from its host galaxy.
-
Black Hole Kicked Away? Gravitational Waves Reveal Einstein’s Ripples in Spacetime
Astronomers have, for the first time, measured the recoil speed and direction of a newborn black hole using gravitational waves. Data from the 2019 event GW190412 revealed the remnant shot away at 50 km/s. This breakthrough shows gravitational waves can reconstruct full 3D motion, offering new ways to connect black hole mergers with light signals.
-
New Black Hole Merger Gives Clearest Test of Einstein’s Relativity
LIGO has detected GW250114, the loudest gravitational-wave signal yet, marking ten years since its first breakthrough. The event confirmed Einstein’s relativity, Hawking’s horizon theorem, and Kerr’s spinning black hole model. By capturing the merger of two 32-solar-mass black holes, scientists gained the clearest view of black hole physics, ...
