grandeur. In fact, no one yet knows whether they’ll reach naked-eye visibility for most people in North America and Europe. But even if they don’t, anyone should be able to catch them with binoculars.

Someday in the future, the first astronauts to explore the north and south poles of Mars may trek across the dusty ice by the eerie green light of oxygen atoms high in the Martian atmosphere. The ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Scientists have observed a fascinating green glow in the Martian night ...

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Add Yahoo as a preferred source to see more of our stories on Google. If you looked to the skies during the early evening of Nov. 4, you saw the nearly full moon, the usual array of stars, and a ...

Look up on a clear sunny day and you will see a blue sky. But is this the true color of the sky? Or is it the only color of the sky? The answers are a little complicated, but they involve the nature ...