Neutron star merger confirms decades of predictions by Princeton researchers

On Aug. 17, the Laser Interferometry Gravitational-Wave Observatory (LIGO) detected the fifth fingerprint of a massive disturbance in spacetime since LIGO began operations in September 2015. Unlike the first four sets of ripples, which reflected collisions between two black holes, the shape of these spacetime distortions suggested a collision between two neutron stars. _Princeton University

Advertisements

New evidence for dark matter makes it even more exotic

Looking at massive galaxy clusters, EPFL astronomers have observed that their brightest galaxies within them “wobble” — an unexpected phenomenon in current models. The discovery, published in MNRAS, adds to the body of evidence of dark matter beyond the Standard Cosmological Model (ΛCDM). _EPFL

Meteorites may have brought building blocks of life to Earth | McMaster Daily News

Life on Earth began somewhere between 3.7 and 4.5 billion years ago, after meteorites splashed down and leached essential elements into warm little ponds, say scientists at McMaster University and the Max Planck Institute in Germany.

Their calculations suggest that wet and dry cycles bonded basic molecular building blocks in the ponds’ nutrient-rich broth into self-replicating RNA molecules that constituted the first genetic code for life on the planet.

McMaster University

Six galaxies from when the universe’s lights came back on

New work from a research team including the director of Carnegie’s Las Campanas Observatory, Leopoldo Infante, has tripled the sample size of known galaxies that can teach scientists about a key period in the universe’s history, when the lights came back on after the so-called dark ages.

Artificial Intelligence Analyzes Gravitational Lenses 10 Million Times Faster

Ερευνητές από το Εθνικό Εργαστήριο Επιταχυντών SLAC και το Πανεπιστήμιο Stanford στις Η.Π.Α., επέδειξαν την δυνατότητα τεχνητών νευρωνικών δικτύων, τα οποία μιμούνται τα εγκεφαλικά, να φέρουν την επανάσταση στην μέθοδο ανάλυσης ιδιαίτερα πολύπλοκων δεδομένων, συμπεριλαμβανομένων των ακραίων χωροχρονικών παραμορφώσεων —καίριας σημασίας για την κατανόηση του σύμπαντος.

Milky Way’s black hole may be spewing out cosmic rays

Mysterious high-energy particles known as cosmic rays zip through space at a wide range of energies, some millions of times greater than those produced in the world’s most powerful atom smasher. Scientists have long thought cosmic rays from inside our galaxy come from supernova explosions, but a new study has fingered a second source: the supermassive black hole at the heart of the Milky Way. With this new result, the search for cosmic ray origins, which has frustrated scientists for more than 100 years, has taken an unexpected new twist._ Science AAAS

Gravitational waves

One hundred years after Albert Einstein predicted the existence of gravitational waves, scientists have finally spotted these elusive ripples in space-time. In a highly anticipated announcement, physicists with the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) revealed on 11 February that their twin detectors have heard the gravitational ‘ringing’ produced by the collision of two black holes about 400 megaparsecs (1.3 billion light-years) from Earth._nature

Scientists spot jets from supermassive black hole snacking on a star

Scientists have discovered a hungry black hole swallowing a star at the centre of a nearby galaxy.
The supermassive black hole was found to have faint jets of material shooting out from it and helps to confirm scientists’ theories about the nature of black holes.
The discovery was published today in the journal Science._ICRAR

World’s Most Powerful Digital Camera Sees Construction Green Light

The Department of Energy has approved the start of construction for a 3.2-gigapixel digital camera – the world’s largest – at the heart of the Large Synoptic Survey Telescope (LSST). Assembled at the DOE’s SLAC National Accelerator Laboratory, the camera will be the eye of LSST, revealing unprecedented details of the universe and helping unravel some of its greatest mysteries._SLAC