Mars will appear brighter than at any other point during the year on Oct. 13, when it will be closest to Earth.
“So, a little over every two years, Mars and Earth are closest together in their orbits and, thus, Mars is at its brightest in our nighttime sky.
(© 2012 Michael Orso)Blue moon on HalloweenFor the first time since 2001, trick-or-treaters will get the chance to experience a Halloween full moon.
A blue moon, by the most popular definition, according to Gross, is when two full moons appear in a single month.
“We will have full moons on Oct. 1 and 31, so that means that we’ll have a blue moon on Halloween,” Gross said.