According to quantum mechanics, a vacuum state is populated by virtual particle pairs undergoing spontaneous creation and annihilation processes. These...
Astronomers discovered only relatively recently that black hole jets emit X-rays, and how the jets accelerate particles to this high-energy state is a...
AT2021lwx occurred nearly 8 billion years ago and was more than 10 times brighter than any known supernova explosion. The event was likely caused by the...
Astronomers at Newcastle University and Colby College have developed a new technique to determine how likely it is that two galaxies are very close together...
Centaurus A is located 13 million light-years away in the constellation of Centaurus, and represents the fifth brightest galaxy in the sky.
This composite...
In 2017, astronomers from the Event Horizon Telescope (EHT) Collaboration captured the first image of a black hole by coordinating radio dishes around...
Messier 87, a massive elliptical galaxy located approximately 53 million light-years away in the constellation of Virgo, turns out to be triaxial, or potato-shaped,...
The iconic Event Horizon Telescope (EHT) image of the supermassive black hole at the center of Messier 87 has received its first official makeover, thanks...
The newly-discovered supermassive black hole resides in a compact star-forming galaxy around 7.7 billion years away and has a mass of 20 million solar...
Using the NASA/ESA Hubble Space Telescope and other space and ground-based observatories, astronomers have discovered SDSS J0749+2255, a closely bound...
The newly-discovered ultramassive black hole has a mass of 32.7 billion solar masses and resides in the center of Abell 1201 BCG, a massive elliptical...
The new animation shows the gamma-ray sky’s frenzied activity during a year of observations by the Large Area Telescope (LAT) aboard NASA’s Fermi Gamma-ray...
3C 297 is located about 9.2 billion light-years away in the constellation of Virgo and contains a quasar, a supermassive black hole pulling in gas at the...
Ultramassive black holes with extreme masses of over 50 billion solar masses can be formed in the rare events that are multiple quasar mergers happening...
X3a is approximately 10 times larger than the Sun, 15 times as massive, and is only several tens of thousands of years old.
Multiwavelength detection of...
Astronomers using the Atacama Large Millimeter Array (ALMA) have detected a rapidly growing supermassive black hole in COS-87259, a galaxy that forms stars...
An elongated dust and gas feature named X7 has a mass of about 50 Earth masses and is on an orbital path around Sagittarius A*, the supermassive black...
According to observations and cosmological simulations, dwarf galaxies are the most abundant type of galaxies in the early Universe and the galaxy merger...
