NGC 2438 is a planetary nebula, formed after the death of a Sun-like star. The medium-sized star would have expelled its outer layers of gas into space as it died, leaving behind a white-dwarf core. A halo of glowing gas... Continue Reading →
Scientists at the John A. Moran Eye Center at the University of Utah have discovered a new type of nerve cell, or neuron, in the retina. In the central nervous system a complex circuitry of neurons communicate with each other... Continue Reading →
More than two thirds (65.5%) of students are experiencing poor sleep quality and this is linked to mental health problems, new research published in the peer-reviewed journal Annals of Human Biologysuggests. The findings, based on more than 1,000 (1,113) men and... Continue Reading →
The haze that blurs a blue sky or a beautiful skyline is caused by tiny particles called PM2.5. PM2.5 describes particulate matter, often made from pollution, less than 2.5 microns wide. Despite their microscopic size, PM2.5 are responsible for more than 4... Continue Reading →
Johns Hopkins University researchers discovered precisely how spiders build webs by using night vision and artificial intelligence to track and record every movement of all eight legs as spiders worked in the dark. Their creation of a web-building playbook or... Continue Reading →
The Horsehead Nebula is one of the most famous nebulae on the sky. It is visible as the dark indentation to the orange emission nebula at the far right of the featured picture. The horse-head feature is dark because it is really an opaque dust cloud that lies in... Continue Reading →
We've seen this same supernova three times -- when will we see it a fourth? When a distant star explodes in a supernova, we're lucky if we see it even once. In the case of AT 2016jka ("SN Requiem"), because the exploding star... Continue Reading →
For the first time, researchers have used human data to quantify the speed of different processes that lead to Alzheimer’s disease and found that it develops in a very different way than previously thought. Their results could have important implications... Continue Reading →
Significant Solar Flare The Sun emitted a significant solar flare peaking at 11:35 a.m. EDT on Oct. 28, 2021. NASA’s Solar Dynamics Observatory, which watches the Sun constantly, captured an image of the event. Solar flares are powerful bursts of radiation.... Continue Reading →
Scents of Science 