Updated at 7:37 a.m. ET Friday
Every two years or so, the sun, Earth and Mars line up — and that's what is happening now. It's a celestial orientation known as Mars opposition. Leaving aside any significance this might have for astrologers, from an astronomical point of view there's one thing you can say for sure about this Mars opposition: Mars will be brighter in the night sky than it's been for 15 years.