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NASA’s Hubble Space Telescope has provided new insights into the young star FU Orionis, located in the constellation Orion. Observations have uncovered extreme temperatures in the inner region of its accretion disk, challenging current models of stellar accretion. Using Hubble’s Cosmic Origins Spectrograph and Space Telescope Imaging Spectrograph, astronomers captured far-ultraviolet and near-ultraviolet spectra, revealing […]
Astronomers have used the Hubble and James Webb space telescopes to gain an unprecedentedly clear view of the disk of gas and dust surrounding the star Vega. There’s no sign of large planets orbiting within it, forcing astronomers to reconsider the range of possible disk architectures and how common planetary systems like the solar system […]
Before flat screen technologies took over, we associate TV with the CRT. But there were other display technologies that worked, they just weren’t as practical. One scheme was the Nipkow disk, and [Bitluni] decided to build a working demonstration of how such a system works. Essentially, there’s a spinning disk with a spiral pattern of […]
Back in May 2022, Western Digital unveiled its 22TB CMR and 26TB UltraSMR hard disk drives, the latter of which achieved its high capacity through the use of large block encoding and an advanced error correction algorithm to increase track-per-inch (TPI) density. The 26TB Ultrastar DC HC670 UltraSMR HDD is a 3.5-inch hard drive featuring […]
Caching various files on disk has always been an integral part of many mobile apps. At Instagram, we use caching to store and recover images, videos, and text files. As a media-heavy application, the Instagram Android app requires a lightweight but stable disk cache system. When we first built the app, we started with the […]