An optical double is an illusion—the stars are at vast distances from each other and are not actually orbiting each other—whereas in a visual binary, the stars are actually orbiting each other. its total energy output into all space
Reviewing an email you are about to send involves checking the spelling.
<h3>What does checking the spelling mean?</h3>
Checking the spelling means to revise the words you use to write an email or any other text.
Checking your spelling is fundamental to avoid confusion and thus slow the communication process.
In conclusion, reviewing an email you are about to send involves checking the spelling.
Learn more about email and spelling here:
brainly.com/question/6180841
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