Space: Sirius — the brightest star in the night sky — is actua…

Question

Did you know? Sirius — the brightest star in the night sky — is actually a binary: Sirius A and the white dwarf Sirius B. It sits just 8.6 light years from us; we see it as it was in the early 21st century. The ancient Egyptians oriented their calendar by the first appearance of Sirius at sunrise in July — a sign the Nile would flood.

Accepted Answer

Sirius — the brightest star in the night sky — is actually a binary: Sirius A and the white dwarf Sirius B. It sits just 8.6 light years from us; we see it as it was in the early 21st century. The ancient Egyptians oriented their calendar by the first appearance of Sirius at sunrise in July — a sign the Nile would flood.

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