This month's full moon is the farthest one from us all year long. Why isn't every full moon the same distance away? I'll tell you. Continue reading →
¡SkyCaramba! Weekly astronomy blog for the week ending January 18, 2014
The moon will be at apogee on January 16. That’s the farthest it will be from the earth during its orbit. It will be full that day too. The two things won’t happen on the same date again until March 2015. In other words, all the full moons later this year and early next year will be closer to us than the one this month. Why aren’t they all the same distance?
The average time between full moons is a little more than 29 days, 12 hours. As the moon goes around the earth, it takes that long for the moon to line up in nearly the same way with the sun and earth. But going from apogee to apogee takes only about 27 days, 8 hours. So from month to month for the next 14 months, apogee will get earlier and earlier compared to the full moon until it’s an entire lunar month ahead and is actually happening with a ...