By Ellalyn de Vera-Ruiz The Leonids meteor shower, one of the most active meteor showers of the year, will be visible in most parts of the country in the late hours of November 21 until dawn of November 22. (Reuters|MANILA BULLETIN) According to the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), the meteor shower can be seen over a period of about two days centered on the early morning hours of November 22. It noted that the Leonids meteor shower will radiate from constellation Leo and can be observed in the eastern horizon. But unlike the previous years where it produced hundreds of meteors, astronomers and experts do not predict many meteors this year. A zenithal hourly rate of about 15 meteors might occur in the late hours of November 21 until dawn of the following day. The Leonids meteor shower is created by bits of debris left behind by the repeat passages through the inner solar system of comet 55P/Tempel-Tuttle. Likewise, this month, PAGASA said the splendid W formation of stars known as the constellations of Cassiopeia, Draco, ursa minor or the Little Bear, including the constellations of Perseus and Camelopardalis will be a good target for astrophotography.