Archives For opposition

Earth’s Moon and Planet Mars will be just over one degree apart at 12:18 AM EDT, Saturday, October 3, as viewed from the Hiram, Ohio area. Credit: Sky Safari/James Guilford

The night of October 2 – 3 will see a brilliant pairing of lights, a conjunction, in our night sky. Earth’s Moon and planet Mars will shine close together — only a smidgen over a degree apart — in the southeast. As viewed from the Hiram, Ohio area, Moon and Mars will be nearest each other at 12:18 AM EDT. Don’t worry if you can’t stay up, the two will be a beautiful pair to behold all night long.

Our Moon will be a day past Full and in its Waning Gibbous phase, so it will be round and bright. Mars, while too distant to be seen as a disc by the unaided eye, is nearing an unusually close approach to Earth during its opposition and will shine like a coppery star. Mars will be nearest to Earth, at 62 million kilometers (38,525,014 miles) distant, on October 6 and it won’t be that close again until 2035.

Opposition refers to a time in their orbits when Mars (or another planet) is opposite the Earth from the Sun — around that time is when the two bodies, on concentric racetrack orbits around the Sun, pass each other and are at their closest and brightest.