The second full moon of May will look smaller and dimmer than usual. By Katrina Miller A celestial rarity known as a blue micromoon will grace the night sky this weekend. It arises from the coinciding ...

Earth and the moon may look very different today, but they formed under similar conditions in space. In fact, a dominant hypothesis says that the early Earth was hit by a Mars-sized object, and it was ...

Oregonians who may have missed this month's full moon have a second chance as a rare “once‑in‑a‑blue‑moon” micromoon will rise on May 31. The moon cycles through eight phases over roughly 29.5 days.

The Earth and the Moon may look very different today, but they formed under similar conditions in space. In fact, a dominant hypothesis says that the early Earth was hit by a Mars-sized object, and it ...