Home / Software & Service News / Astronomers more accurately calculate the Milky Way’s mass

Astronomers more accurately calculate the Milky Way’s mass

It’s impossible to arrive at an exact measurement for the billions of stars and other objects that make up the Milky Way. However, a group of astronomers say they have calculated the most accurate estimate to date. In a paper that will be published in The Astrophysics Journal, the scientists estimate the mass of the Milky Way to be 9.5 x 1041 kilograms or 95 followed by 40 zeros. For reference, that’s 4.8 x 1011 times the mass of the sun. Astronomers use the so-called “solar masses” as a standard unit of measure, comparing other objects and formations to the sun.

The scientists used some super complex math and stats calculations to arrive at that estimate. More specifically, the team employed a combination hierarchical Bayesian analysis along with direct measurements of the velocity of globular clusters. Astronomers can estimate the mass of the sun by observing its gravitational pull on the Earth. The same can be done for the Milky Way by measuring its gravitational pull on those globular clusters. This new estimate includes stars, planets, moons, dust, dark matter and more that make up the galaxy.

Researchers say the key to this calculation is that they include any uncertainties in the estimate. Gwendolyn M. Eadie, a doctoral candidate at McMaster University in Hamilton, Ontario, explained to The New York Times that the methods used here could have wider implications for future research. The methods have been employed in other fields before, but they’re becoming more useful to astronomers now that computers have enough processing power to handle the complex calculations.

Via: The New York Times

Source: Cornell University Library

Click Here For Original Source Of The Article

About Ms. A. C. Kennedy

Ms. A. C. Kennedy
My name is Ms A C Kennedy and I am a Health practitioner and Consultant by day and a serial blogger by night. I luv family, life and learning new things. I especially luv learning how to improve my business. I also luv helping and sharing my information with others. Don't forget to ask me anything!

Check Also

Samsung’s phone-as-desktop concept now runs Linux

Samsung's DeX is a clever way to turn your phone into a desktop computer. However, there's one overriding problem: you probably don't have a good reason to use it instead of a PC. And Samsung is trying to fix that. It's unveiling Linux on Galaxy, an app-based offering that (surprise) lets you run Linux distributions on your phone. Ostensibly, it's aimed at developers who want to bring their work environment with them wherever they go. You could dock at a remote office knowing that your setup will be the same as usual.

It's not quite the same as your typical Ubuntu or Debian install. Linux on Galaxy launches through an app, and it's using the same kernel as Android itself in order to maintain performance. And it almost goes without saying that you'll really want a DeX setup, since most Linux apps are expecting a large screen, mouse and keyboard.

As it stands, you'll have to be patient. Linux on Galaxy isn't available right now -- you can sign up for alerts, but it's not ready for public consumption. Even so, this is good evidence that Samsung thinks of DeX as considerably more than a novelty feature. It may be a long, long while (if ever) before many people are using their phones as desktops, but Samsung is willing to gradually build up its ecosystem and eventually give you an incentive to take a second look.

Source: Samsung, Linux on Galaxy