Leap years are needed to keep our modern day calendar in alignment with the Earth’s revolutions around the sun.
It takes the Earth approximately 365.242189 days – or 365 days, 5 hours, 48 minutes, and 45 seconds – to circle once around the Sun. However, the modern calendar has only 365 days in a year, so if there wasn’t a leap day on February 29 nearly every four years, we would lose almost six hours off our calendar every year. After 100 years, our calendar would be off by about 24 days!
30th Anniversary of the Launch of the Hubble Space Telescope
Hubble Space Telescope launched from shuttle Discovery, weighing approximately 11,355 kg. The first image taken by Wide Field/Planetary Camera was released 20 May 1990. A spherical aberration in the optical system, which severely reduced the quality of the images produced was announced publicly June 27.
May 6th and 7th. The Eta Aquarids is an above average meteor shower, with up to 60 meteors per hour at its peak. Most of the activity is seen in the Southern Hemisphere. In the Northern Hemisphere, the rate can reach about 30 meteors per hour. It is produced by dust particles left behind by comet Halley, which has known and observed since ancient times. The shower runs annually from April 19 to May 28. It peaks this year on the night of May 6 and the morning of the May 7. The Moon will be almost full at the peak which may block out all but the brightest meteors. Best viewing will be from a dark location after midnight. Meteors will radiate from the constellation Aquarius, but can appear anywhere in the sky.