For the first time, astronomers have detected the presence of a throng of black holes crowding near the center of an ancient globular cluster. Source: https://earthsky.org/space/group-black-holes-found-globular-cluster-ngc-6397…
Tag: concentration
How to see Sirius B
Sirius is a binary star, with a small white dwarf called the Pup orbiting the large primary star. It’s not easy to observe, but it is possible. Here’s how. Source: https://earthsky.org/brightest-stars/how-to-observe-sirius-b…
A giant undersea sand worm’s fossilized lair
In 20-million-=year-old rock off the coast of Taiwan, researchers have discovered what they think is the fossilized burrow of a giant, predatory sand worm. Source: https://earthsky.org/earth/scientists-find-evidence-of-giant-predatory-sand-worms…
Prostate Cancer Can Be Precisely Diagnosed Using a Urine Test With AI
An anonymous reader Phys.Org: The Korea Institute of Science and Technology (KIST) announced that the collaborative research team led by Dr. Kwan Hyi Lee from the Biomaterials Research Center and Professor In Gab Jeong from Asan Medical Center developed a technique for diagnosing prostate cancer from urine within only 20 minutes with almost 100% accuracy. The research team developed this technique…
Atmospheric CO2 will pass an alarming milestone in 2021
In 2021, atmospheric carbon dioxide concentration will be 50% higher than preindustrial levels, despite reduced emissions during the pandemic and a natural cooling event. Source: https://www.livescience.com/co2-concentration-rising-past-alarming-threshold.html
Unveiling the double origin of cosmic dust in the distant Universe
Two billion years after the Big Bang, the Universe was still very young. However, thousands of huge galaxies, rich in stars and dust, were already formed. An international study, led by SISSA—Scuola Internazionale Superiore di Studi Avanzati, now explains how this was possible. Scientists combined observational and theoretical methods to identify the physical processes behind their evolution and, for the first…
Sluggish start for Arctic sea ice freeze-up
Early ice retreat amid warm Arctic air temperatures set the stage for the slow refreeze in 2020. Source: https://earthsky.org/earth/sluggish-start-for-arctic-sea-ice-freeze-up-2020…
Are Fragments of Energy the Fundamental Building Blocks of the Universe?
hcs_$reboot shares a remarkable new theory from Larry M. Silverberg, an aerospace engineering professor at North Carolina State University (with colleague Jeffrey Eischen). They’re proposing that matter is not made of particles (or even waves), as was long thought, but fragments of energy. [W]hile the theories and math of waves and particles allow scientists to make incredibly accurate predictions about the…
Hackers Are Selling More Than 85,000 MySQL Databases On a Dark Web Portal
An anonymous Slashdot reader writes:
For the past year, hackers have been breaking into MySQL databases, downloading tables, deleting the originals, and leaving ransom notes behind, telling server owners to contact the attackers to get their data back. If database owners don’t respond and ransom their data back in nine days, the databases are then put up on auction on a dark…
What are ‘open’ star clusters?
Open clusters are young, loosely bound gatherings of stars that may still be surrounded by the nebula – or space cloud – in which they were born. The Pleiades, Hyades, and Beehive are well-known examples of open star clusters. Source: https://earthsky.org/astronomy-essentials/definition-examples-what-are-open-star-clusters…