Chandra Discovers Neutron-Star-Powered Ultraluminous X-Ray Source
In the 1980s, researchers began discovering extremely bright sources of X-rays in the outer portions of galaxies, away from the supermassive black holes that dominate…
In the 1980s, researchers began discovering extremely bright sources of X-rays in the outer portions of galaxies, away from the supermassive black holes that dominate…
A research team has published a new study led by Pat Roche, professor of astrophysics at The University of Oxford, and Chris Packham, associate professor…
A dramatic magnetic power struggle at the Sun’s surface lies at the heart of solar eruptions, new research using NASA data shows. The work highlights…
Astronomers have used NASA’s Hubble Space Telescope to make the most precise measurements of the expansion rate of the universe since it was first calculated…
In the real world, your past uniquely determines your future. If a physicist knows how the universe starts out, she can calculate its future for…
Astronomers have the “all-clear” for an exciting test of Einstein’s Theory of General Relativity, thanks to a new discovery about S0-2’s star status. Up until…
The Sun glows with a surface temperature of about 5,500 degrees Celsius (9,900 degrees Fahrenheit). On the other hand, its hot outer layer, the corona,…
A new simulation of supermassive black holes–the behemoths at the centers of galaxies–uses a realistic scenario to predict the light signals emitted in the surrounding…
The biggest black holes in the Universe are growing faster than the rate of stars being formed in their galaxies, according to two new studies…
High-resolution observations with the Atacama Large Millimeter/submillimeter Array (ALMA) imaged a rotating dusty gas torus around an active supermassive black hole. The existence of such…
If they existed, axions – one of the candidates for particles of the mysterious dark matter – could interact with the matter forming our world,…
The galaxy Arp 220 is ultraluminous (defined as having more than about 300 times the luminosity of our own galaxy) and, at a distance of…
The universe is highly magnetic, with everything from stars to planets to galaxies producing their own magnetic fields. Astrophysicists have long puzzled over these surprisingly…
Dark matter is increasingly puzzling. Around the world, physicists have been trying for decades to determine the nature of these matter particles, which do not…
The Sun might emit less radiation by mid-century, giving planet Earth a chance to warm a bit more slowly but not halt the trend of…
Extremely distant galaxies are usually too faint to be seen, even by the largest telescopes. But nature has a solution: gravitational lensing, predicted by Albert…
A University of Oklahoma astrophysics team has discovered for the first time a population of planets beyond the Milky Way galaxy. Using microlensing–an astronomical phenomenon…
A new international study involving The Australian National University (ANU) has found a plane of dwarf galaxies orbiting around Centaurus A in a discovery that…