The η-Aquarid meteor shower will remain active until May 28, with its peak expected on May 6.

According to the Department of Astrophysics at the Physics Faculty of Baku State University (BSU), the η-Aquarid shower occurs annually as the Earth passes through dust particles ejected by Halley's Comet in its orbit. As these particles enter the Earth’s atmosphere, they create bright light trails—commonly referred to as "shooting stars."

The source of the η-Aquarid shower is Halley’s Comet, one of the oldest comets observed in astronomy. Halley’s Comet is responsible for two meteor showers: the η-Aquarids, visible in May, and the Orionids, which occur in October.

Halley’s Comet takes 76 years to complete a revolution around the Sun. The last time it was visible was in 1986, and the next appearance will be in 2061. In 1705, English astronomer Edmond Halley proved that the comet observed in 1531, 1607, and 1682 was the same object, and it was named in his honor.

The meteor shower is named after its radiant, located near the star η Aquariids in the constellation Aquarius.

The best time to observe the η-Aquarid shower from Baku will be on the night of May 5-6, between 02:15 and 05:00. The expected number of meteors will reach 40 per hour, with Baku offering a maximum of 19-20 meteors per hour.

The η-Aquarid meteor shower is one of the most stunning natural phenomena to look forward to in 2025.