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Tonight around 1:45 a.m., Boston will be the closest it’s been to Mars in 60,000 years. A good rule of thumb: If you want to see Mars when it’s closest to your hometown, be outside around 1 o’clock Wednesday morning. Look south and up.Close Encounters with Mars, NASA

Technically, we won’t be in periareon (a neologism analogous to perihelion, the closest point to the sun) because Earth is not a satellite of Mars the way, say, Phobos is. But it makes a cool entry title. (It was that or Mars Attacks!)

If you’re having a Mars Party in Boston, leave a comment. Otherwise, I’ll be looking south from the roof at home.

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