Note: Single-source report; awaiting corroboration.
The Eta Aquarid meteor shower, caused by particles from Halley’s Comet, is expected to peak on May 5 and 6. These meteors enter Earth’s atmosphere at about 40 miles per second and can leave glowing trails. At peak, up to 50 meteors per hour may be observed under ideal dark conditions, with the best viewing time before dawn, looking generally toward the eastern sky. Bright moonlight this year may reduce the visibility of fainter meteors. For optimal viewing, NASA recommends going to a dark location and letting your eyes adjust for 20 to 30 minutes while avoiding bright lights. Halley’s Comet last passed in 1986 and will return in 2061.
On May 18, a conjunction of the Moon and Venus will be visible in the western sky just after sunset. The crescent Moon will help locate Venus, one of the brightest objects in Earth's sky and often called the Evening Star. Though they appear close from Earth’s perspective, they are actually separated by millions of miles in space.
May 31 will feature a Blue Moon, which refers to the second Full Moon in a single calendar month. Despite the name, the Moon will not appear blue. Blue Moons are relatively rare, inspiring the phrase 'once in a blue moon'.