Tag: halo

Microsoft to Pitch New Xbox Game Console With Monthly Showcases

Microsoft, gearing up for its biggest-ever year of launches for Xbox products and services in the middle of a global pandemic and economic recession, will replace its plan for a splashy public game-conference event with a monthly series of online showcases. From a report: The virtual events start on May 7, with a look at third-party games planned for its new…

Milky Way could be catapulting stars into its outer halo

Scientists used computer simulations to learn that our Milky Way galaxy may sometimes launch newly forming stars into the space around itself – that is, into the halo of our galaxy – via outflows triggered by supernova explosions. Source: https://earthsky.org/space/milky-way-catapulting-stars-into-its-outer-halo…

Milky Way could be catapulting stars into its outer halo, astronomers say

Though mighty, the Milky Way and galaxies of similar mass are not without scars chronicling turbulent histories. University of California, Irvine astronomers and others have shown that clusters of supernovas can cause the birth of scattered, eccentrically orbiting suns in outer stellar halos, upending commonly held notions of how star systems have formed and evolved over billions of years. Source: https://phys.org/news/2020-04-milky-catapulting-stars-outer-halo.html…

Astronomers Have Finally Found the Edge of the Milky Way

Iwastheone quotes Science News:
Astronomers have long known that the brightest part of the Milky Way, the pancake-shaped disk of stars that houses the sun, is some 120,000 light-years across. Beyond this stellar disk is a disk of gas. A vast halo of dark matter, presumably full of invisible particles, engulfs both disks and stretches far beyond them. But because the dark…

Physicists Disagree Over New Dark Matter Claim

sciencehabit shared this article from Science magazine: For decades, astrophysicists have thought some sort of invisible dark matter must pervade the galaxies and hold them together, although its nature remains a mystery. Now, three physicists claim their observations of empty patches of sky rule out one possible explanation of the strange substance — that it is made out of unusual particles…

What is a globular cluster?

Globular clusters are spherical collections of up to perhaps a million stars, orbiting mostly in the star halo of spiral galaxies, containing some of a galaxy’s oldest stars. Source: https://earthsky.org/space/definition-what-is-a-globular-cluster…

I saw an upside-down rainbow. What is it?

Circumzenithal arcs have been described as upside-down rainbows or “a grin in the sky.” They’re wonderful! See photos here. Source: https://earthsky.org/earth/i-saw-an-upside-down-rainbow-circumzenithal-arc…

Globular cluster billowing in the galactic wind

The galactic magnetic field plays an important role in the evolution of the galaxy, but its small-scale behaviour is still poorly known. It is also unknown whether it permeates the halo of the galaxy or not. By using observations of pulsars in the halo globular cluster 47 Tuc, an international research team led by Federico Abbate from the Max Planck Institute…