A Newer, More Accurate Measurement Sets the Mass of the Milky Way at 1.5 Trillion Solar Masses

The Milky Way is but one of billions.
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fred8615
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Joined: October 12th, 2009, 12:29 pm
Location: Sorrento, LA

A Newer, More Accurate Measurement Sets the Mass of the Milky Way at 1.5 Trillion Solar Masses

Post by fred8615 »

Astronomers keep trying to measure the mass of the Milky Way and they keep coming up with different numbers. But it’s not that they’re bad at math. Measuring the mass of something as enormous as the Milky Way is confounding. Plus, we’re embedded in it; it takes some very clever maneuvering to constrain its mass.

The Milky Way’s mass is a fundamental scientific question that astronomers have been trying to answer for decades. The problem is, even astronomers’ best estimates vary wildly. The difficulty arises not from measuring the mass of the stars themselves. It comes from the challenge of measuring dark matter.

Read more: https://www.universetoday.com/141723/a- ... ore-141723
Frederick J. Barnett
"Someone's got to take the responsibility if the job's going to get done!! Do you think that's easy?!" Gregory Peck - The Guns Of Navarone

Christopher K.
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Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: A Newer, More Accurate Measurement Sets the Mass of the Milky Way at 1.5 Trillion Solar Masses

Post by Christopher K. »

Even though that's a lot of mass, new evidence suggests magnetism rules the roost at the center of our Milky Way. SOFIA data seems to paint a picture of magnetic fields holding sway there just as they do in the Sun's corona.

More information:
https://skyandtelescope.org/astronomy-n ... ways-core/

About SOFIA:
https://www.sofia.usra.edu/multimedia/a ... a-aircraft

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