22nd Jul 2013
NASA’s Hubble Shows Link Between Stars’ Ages and Their Orbits

Astronomers using NASA’s Hubble Space Telescope have determined the orbital motion of two distinct populations of stars in an ancient globular star cluster, offering proof they formed at different times and providing a rare look back into the Milky Way galaxy’s early days.

Researchers combined recent Hubble observations with eight years’ worth of data from the telescope’s archive to determine the motions of the stars in the globular cluster 47 Tucanae, which is located about 16,700 light-years away in the southern constellation Tucana.
The analysis enabled researchers, for the first time, to link the movement of stars in the clusters with the stars’ ages. The two populations in 47 Tucanae differ in age by less than 100 million years.
Read More.

NASA’s Hubble Shows Link Between Stars’ Ages and Their Orbits

Astronomers using NASA’s Hubble Space Telescope have determined the orbital motion of two distinct populations of stars in an ancient globular star cluster, offering proof they formed at different times and providing a rare look back into the Milky Way galaxy’s early days.

Researchers combined recent Hubble observations with eight years’ worth of data from the telescope’s archive to determine the motions of the stars in the globular cluster 47 Tucanae, which is located about 16,700 light-years away in the southern constellation Tucana.

The analysis enabled researchers, for the first time, to link the movement of stars in the clusters with the stars’ ages. The two populations in 47 Tucanae differ in age by less than 100 million years.

Read More.

Source: nasa.gov
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