Mystic Sisterhood

Would you like to react to this message? Create an account in a few clicks or log in to continue.
Mystic Sisterhood

Psychic, Paranormal & Natural Science Forums



Next Chat Event

Hubble Makes the First Precise Distance Measurement to an Ancient Globular Star Cluster 5nvklj





Hubble Makes the First Precise Distance Measurement to an Ancient Globular Star Cluster 9tpt39

..


Hubble Makes the First Precise Distance Measurement to an Ancient Globular Star Cluster

Dragon
Dragon
Senior Administrator
Senior Administrator

Posts : 7263
Points : 23846
Times User Thanked: : 902
Join date : 2018-01-18

Hubble Makes the First Precise Distance Measurement to an Ancient Globular Star Cluster Empty Hubble Makes the First Precise Distance Measurement to an Ancient Globular Star Cluster

Post by Dragon Thu Apr 05, 2018 6:33 pm

Astronomers using NASA’s Hubble Space Telescope have for the first time precisely measured the distance to one of the oldest objects in the universe, a collection of stars born shortly after the big bang.

This new, refined distance yardstick provides an independent estimate for the age of the universe. The new measurement also will help astronomers improve models of stellar evolution. Star clusters are the key ingredient in stellar models because the stars in each grouping are at the same distance, have the same age, and have the same chemical composition. They therefore constitute a single stellar population to study.

Source

 
Dragon
Dragon
Senior Administrator
Senior Administrator

Posts : 7263
Points : 23846
Times User Thanked: : 902
Join date : 2018-01-18

Hubble Makes the First Precise Distance Measurement to an Ancient Globular Star Cluster Empty Re: Hubble Makes the First Precise Distance Measurement to an Ancient Globular Star Cluster

Post by Dragon Thu Apr 05, 2018 6:34 pm

Hubble Makes the First Precise Distance Measurement to an Ancient Globular Star Cluster Hubbleimage1stscihp1824am2000x1500
Credits: NASA, ESA, and T. Brown and S. Casertano (STScI) ; Acknowledgement: NASA, ESA, and J. Anderson (STScI)

This ancient stellar jewelry box, a globular cluster called NGC 6397, glitters with the light from hundreds of thousands of stars.

Source / Image Courtesy

 
Dragon
Dragon
Senior Administrator
Senior Administrator

Posts : 7263
Points : 23846
Times User Thanked: : 902
Join date : 2018-01-18

Hubble Makes the First Precise Distance Measurement to an Ancient Globular Star Cluster Empty Re: Hubble Makes the First Precise Distance Measurement to an Ancient Globular Star Cluster

Post by Dragon Thu Apr 05, 2018 6:35 pm



This video zooms into a Hubble Space Telescope view of globular star cluster NGC 6397.

This ancient stellar jewelry box, a globular cluster called NGC 6397, glitters with the light from hundreds of thousands of stars.

The new measurement sets the cluster's distance at 7,800 light-years away, with just a 3 percent margin of error. NGC 6397 is one of the closest globular clusters to Earth.

 

Sponsored content

Hubble Makes the First Precise Distance Measurement to an Ancient Globular Star Cluster Empty Re: Hubble Makes the First Precise Distance Measurement to an Ancient Globular Star Cluster

Post by Sponsored content


    Current date/time is Fri Oct 22, 2021 1:14 am