Physicist Avi Loeb of Harvard believes we should take seriously the idea that ‘Oumuamua – the 1st known object to pass through our solar system from interstellar space – might have been created by an alien civilization. His new book is called “Extraterrestrial.” Source: https://earthsky.org/space/book-avi-loeb-extraterrestrial-1st-sign-of-intelligent-life…
Tag: the universe
New technique used to discover how galaxies grow
For decades, space and ground telescopes have provided us with spectacular images of galaxies. These building blocks of the universe usually contain several million to over a trillion stars and can range in size from a few thousand to several hundred thousand light-years across. What we typically see in an image of a galaxy are the stars, gas and dust that…
Superpowerful ‘oscillon’ particles could have dominated the infant universe, then vanished
A weird, super-powerful particle that’s not truly a particle could have dominated the universe when it was just a second old, releasing a flood of ripples that permeated all of space-time. Source: https://www.livescience.com/oscillon-particle-early-univrse.html
Galaxy-Size Gravitational-Wave Detector Hints At Exotic Physics
The fabric of spacetime may be frothing with gigantic gravitational waves, and the possibility has sent physicists into a tizzy. A potential signal seen in the light from dead stellar cores known as pulsars has driven a flurry of theoretical papers speculating about exotic explanations. Scientific American reports: The most mundane, yet still quite sensational, possibility is that researchers working with…
Maarten Schmidt solves the puzzle of quasars
On February 5, 1963, Maarten Schmidt unraveled the mystery of quasars and pushed back the edges of the known cosmos. His insight into quasars – the most distant and luminous objects known – has changed the way scientists view the universe. Source: https://earthsky.org/space/this-date-in-science-maartin-schmidt-discovers-first-known-quasar…
Why the universe can be described by the equations of fluids
Studying the universe and the flow of fluids may seem worlds apart, but they involve some of the same equations, writes Chanda Prescod-Weinstein Source: https://www.newscientist.com/article/mg24933200-100-why-the-universe-can-be-described-by-the-equations-of-fluids/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…
Astronomers spot bizarre, never-before-seen activity from one of the strongest magnets in the universe
Astronomers from the ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav) and CSIRO have just observed bizarre, never-seen-before behavior from a radio-loud magnetar—a rare type of neutron star and one of the strongest magnets in the universe. Source: https://phys.org/news/2021-02-astronomers-bizarre-never-before-seen-strongest-magnets.html…
Hitchhiker’s Guide To the Galaxy: New Research Says #42 Really Is Our Number
Just 11 months before his death in 2001, famous author Douglas Adams answered questions from Slashdot readers. And Slashdot reader Informativity still remembers how Adams (also a Doctor Who script editor) had included a supercomputer named Deep Thought in his first book which spent 7.5 million years to determine that the answer to the Ultimate Question of Life, the Universe, and…
JADES will go deeper than the Hubble Deep Fields
Astronomers announced this month that a new deep-field survey called JADES will be carried out with the James Webb Space Telescope, Hubble’s much-anticipated successor. The Webb is due to launch later this year. Source: https://earthsky.org/space/jades-deep-field-surveys-epoch-of-1st-galaxies…
Extreme black holes have hair that can be combed
Black holes are considered amongst the most mysterious objects in the universe. Part of their intrigue arises from the fact that they are actually among the simplest solutions to Einstein’s field equations of general relativity. In fact, black holes can be fully characterized by only three physical quantities: their mass, spin and charge. Since they have no additional “hairy” attributes to…