zone
-
Space & Cosmos
Astronomers discover hundreds of new galaxies by ignoring the avoidance zone
A galaxy observed within the Vera supercluster. Credit: Sambatriniaina HA Rajohnson et al. There are regions of the sky that astronomers are afraid to see. Filled with a cloud of black dust, hiding an invisible mass. It has a very large mass and attracts the Milky Way and other galaxies. Well, that may be an exaggeration, but it’s true. This…
Read More » -
Space & Cosmos
Investigating how stellar threats affect the habitable zone of exoplanets
This image from the study shows the sky positions of exoplanet-dominated stars projected onto the Mollweide map. The HZS is indicated by a yellow-green circle, and the remaining exoplanet population is represented by a gray circle. The studied sample of 84 HZS located within 220 parsecs of the Sun is represented by a yellow-green cross circle. The three dense HZSs…
Read More » -
Space & Cosmos
Astronomers map ‘danger zone’ of planet-forming disks in star clusters
X-ray: NASA/CXC/SAO/J. Drake et al, IR: NASA/JPL-Caltech/Spitzer; Image processing: NASA/CXC/SAO/N. walk Most stars form collections called clusters or federations that contain very massive stars. These massive stars emit large amounts of high-energy radiation that can destroy relatively fragile disks of dust and gas that are in the process of merging to form new planets. A team of astronomers uses NASA’s…
Read More » -
Earth
Geologists discover mysterious subduction zone beneath the Pacific Ocean, reshaping understanding of Earth’s interior
A map depicting the area where the ancient ocean floor was discovered. Credit: Jingchuan Wang, University of Maryland. Scientists at the University of Maryland have discovered evidence of an ancient ocean floor that sank deep into the Earth during the age of dinosaurs, casting doubt on existing theories about the Earth’s internal structure. This previously unstudied section of the ocean…
Read More » -
Earth
Study identifies superionic iron hydride as key to ultra-low velocity zone at the boundary between Earth’s core and mantle
Mean square displacements (MSD) of Fe and H atoms in fcc-FeH at different temperatures and volumes from NVT-FPMD simulations. The core-mantle boundary (CMB) is a key boundary within the Earth, marking the boundary between the outer core and the lower mantle. Over the past two decades, seismological studies have identified anomalously low-velocity regions above the CMB, such as the Large-Scale…
Read More »
