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Line 23: − − ==Old Universe View== − − In the cosmological model of a billions of years old universe, Achernar is theorized to be a couple hundred million years old, young enough to still be fusing [[hydrogen]] into [[helium]] in its core. Because of the star's high mass, it will burn through its core fuel quickly however, and eventually evolve into a large white dwarf, much like [[Sirius#Sirius_B|Sirius B]].<ref>http://stars.astro.illinois.edu/sow/achernar.html</ref>
→Old Universe View
There are no known substaller companions to Achernar. For an [[terrestrial planet|Earth-like]] to have liquid water on its surface, the hypothetical planet's orbit would be centered around 54 to 73 AUs, an orbit greater then the orbit of [[Pluto]]. At such a distance, the planet would take between 160 and 260 years to orbit Achernar.<ref>http://www.solstation.com/x-objects/achernar.htm</ref>
There are no known substaller companions to Achernar. For an [[terrestrial planet|Earth-like]] to have liquid water on its surface, the hypothetical planet's orbit would be centered around 54 to 73 AUs, an orbit greater then the orbit of [[Pluto]]. At such a distance, the planet would take between 160 and 260 years to orbit Achernar.<ref>http://www.solstation.com/x-objects/achernar.htm</ref>
[[Category:Astronomy]]
[[Category:Astronomy]]