May I write about the famous meteor shower you can watch these days?
I know some members including Kukumarks are interested .
The 60- 100 per hour Perseid shower will be falling to Earth tonight , tomorrow and the next day.
The peak may be in the morning hrs of tomorrow or day after tomorrow.
If you are residing under a clear sky without much artificial illumination you can try after dark. Dry zone rural areas are the best with less humidity and town lights.
It is better if you can get up early in the morning @ 3 or 4 and observe North-Eastern sky.
Because the constellation Perseid rises after mid night. Most of the objects are coming from Perseid area , as the name denotes.
When Comets go around the Sun, millions of solid particles are spread along the orbit and they stick together for long time in the same orbit.
When a planet crosses a such path ( see image) thousands of these leftover objects are attracted and sucked towards it due to the gravitational force. With earth, they come like a bombardment into our atmosphere and get burnt due to friction and give falling-star display.
Perseid meteor shower is activated every August when the Earth crosses the orbit of comet Swift-Tuttle which has a 133 year orbital journey around Sun.
Perseid is one of major meteor showers giving 60-120 shoots per hour.
By now, the earth has almost reached to the path of the comet and from today to 13th meteors can give the spectacular display.
Comet Swift-Tuttle Discovered in 1882 comes towards the Sun in every 133 years .
Last appearance was in 1992 and the next perihelion will be in 2126.
Not like in last time , in 2126 the earth will be at a very closer position to the 26Km Diameter comet when it cross our orbit.
Potential threat to Earth
Upon its 1992 rediscovery, the comet's date of perihelion passage was off from the then-current prediction by 17 days. It was then noticed that, if its next perihelion passage (August 14, 2126) was also off by another 15 days, the comet would very likely strike the Earth or Moon.
Somehow, subsequent observations have led to recalculation of its orbit, which indicates the comet's orbit is very stable, and that there is absolutely no threat over the next two thousand years.
A close encounter with Earth is predicted for the comet's return to the inner solar system in the year 4479 and Comet Swift–Tuttle has been described as "the single most dangerous object known to humanity".