Sirius things to think about
from SkyCaramba Hosted by SkyCaramba
The planet watching continues to migrate to the morning. Astronomers realized in 1844 that Sirius has a companion star. But it took 18 years before anyone built a telescope that could reveal it. Sky watchers of long ago described Sirius as red. Why would they say that when the star is bluish-white?
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This episode was published on January 23, 2022.
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