A new study using data from NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton suggests that dark energy may have varied over cosmic time, as reported in our latest press release.
Black holes, while fascinating, are hardly a new discovery – but a black hole spinning at one of the highest speeds ever, according to the Hindustan Times, is a completely different story – especially when there have only ever been four others like it.
For decades, astronomers have puzzled over the variability of young stars residing in Taurus-Auriga dark clouds, a group of molecular clouds located in the constellations of Taurus and Auriga, about 450 light-years away. Since 1937, they have recorded noticeable dips in the brightness of RW Aur A — the primary star of a low-mass binary system — every few decades. Each dimming event appeared to last for about a month. In 2011, the star dimmed again, this time for about half a year. RW Aur A eventually brightened, only to fade again in mid-2014. In November 2016, the star returned to its full luminosity. Now Hans Moritz Günther of MIT and co-authors have observed RW Aur A using NASA’s Chandra X-Ray Observatory. They’ve found evidence for what may have caused its most recent dimming event: a collision of two protoplanetary bodies, which produced in its aftermath a dense cloud of gas and dust. As this planetary debris fell into RW Aur A, it generated a thick veil, temporarily obscuring the star’s light.
New observations by NASA’s Chandra X-ray Observatory indicate the two brightest stars in the triple-star system Alpha Centauri are not pummeling any orbiting exoplanets with large amounts of X-rays.
A new study using X-ray data from NASA’s Chandra X-ray Observatory indicates that the neutron star merger that became the gravitational wave source, GW170817, likely created the lowest mass black hole known.
New research finds potentially thousands of black holes orbiting within a few light-years of the galactic center.
This winter has brought many intense and powerful storms, with cold fronts sweeping across much of the United States. On a much grander scale, astronomers have discovered enormous “weather systems” that are millions of light years in extent and older than the Solar System.
Black holes are hanging out at the center of our galaxy by the thousands, according to scientists who have detected a bunch of them in the neighborhood of a supermassive black hole already known to reside at the heart of the Milky Way.
The “rogue” worlds are said to be located 3.8 billion light-years away.