RSSfeeds (Page 462)

Under pressure, black holes feast A new, Yale-led study shows that some supermassive black holes actually thrive under pressure. phys.org Go to SourceRead More →

MAVEN maps electric currents around mars that are fundamental to atmospheric loss Five years after NASA’s MAVEN spacecraft entered into orbit around Mars, data from the mission has led to the creation of a map of electric current systems in the Martian atmosphere. phys.org Go to SourceRead More →

The ‘Cow’ mystery strikes back: Two more rare, explosive events captured The ‘Cow’ is not alone; with the help of W. M. Keck Observatory on Maunakea in Hawaii, astronomers have discovered two more like it—the ‘Koala’ and a similar mysterious bright object called CSS161010. This trio of fast blue optical transients (FBOTs) appear to be relatives, all belonging to a highly-luminous family that has a track record for surprising astronomers with their fast, powerful bursts of energy. phys.org Go to SourceRead More →

Astrophysicists capture new class of transient objects Move aside, AT2018COW. There is a new astronomical transient in the universe, and it is faster, heavier and brighter at radio wavelengths than its mysterious predecessors. phys.org Go to SourceRead More →

Astronomers create cloud atlas for hot, Jupiter-like exoplanets Giant planets in our solar system and circling other stars have exotic clouds unlike anything on Earth, and the gas giants orbiting close to their stars—so-called hot Jupiters—boast the most extreme. phys.org Go to SourceRead More →

First observation of a transitioning Type II solar radio burst using LOFAR Type II solar radio bursts are believed to be excited by shock waves. They are often linked to shocks driven by solar eruptive events like coronal mass ejections (CMEs) and solar flares, and are characterized by a slow drift from high to low frequencies thought to reflect the speed with which the shock propagates away from the sun. Shock-excited emissions that show very little or no frequency drift are known as “stationary Type II bursts” (e.g. Aurass et al. 2002). Stationary Type II bursts are sometimes interpreted as termination shocks in solar flaresRead More →

Study unveils properties of 11 recently discovered pulsars An international team of astronomers has conducted a detailed study of 11 pulsars recently discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The new research, presented in a paper published May 19 on arXiv.org, delivers essential information about the properties of these objects. phys.org Go to SourceRead More →

New infrared telescope to spot cosmic hidden treasures A new infrared telescope, to be designed and built by astronomers at the Australian National University (ANU), will monitor the entire southern sky in search of new cosmic events as they take place. phys.org Go to SourceRead More →

Einstein’s two mistakes Scientific research is based on the relationship between the reality of nature, as it is observed, and a representation of this reality, formulated by a theory in mathematical language. If all the consequences of the theory are experimentally proven, it is considered as validated. This approach, which has been used for nearly four centuries, has built a consistent body of knowledge. But these advances have been made thanks to the intelligence of human beings who, despite all, can still hold onto their preexisting beliefs and biases. This can affect the progress of science, even for the greatest minds. phys.org Go to SourceRead More →

Why astronomers now doubt there is an undiscovered 9th planet in our solar system Planet Nine is a theoretical, undiscovered giant planet in the mysterious far reaches of our solar system. phys.org Go to SourceRead More →

Galactic crash may have triggered solar system formation The formation of the Sun, the Solar System and the subsequent emergence of life on Earth may be a consequence of a collision between our galaxy, the Milky Way, and a smaller galaxy called Sagittarius, discovered in the 1990s to be orbiting our galactic home. phys.org Go to SourceRead More →