If you're an avid moon-watcher, you might notice that our moon appears just a tiny bit smaller in the night sky tonight.
On Monday (Feb. 17), the moon reaches what's known as apogee — its farthest point away from Earth. The moon's orbit is elliptical, or oval-shaped, meaning its distance from Earth changes throughout its 27.3-day cycle around our planet. Sometimes it's closer to us, which is why we experience "supermoons," or full moons that appear slightly larger in the night sky.
