One of the essential summer appointments. The Lost already light up the skies of Canary Islands before thousands of people, who every night, spend the night and move to the summits of the different islands – where with greater height and less light pollution – you can appreciate this astronomical wonder.
Also known as Tears of San Lorenzo They show their peak activity in mid-August. For the year 2019, the activity of the Lost It will occur between July 17 and August 24. The maximum is expected at 6:58 UT on August 13.
According to the calculations of the standard models, the Perseids activity It is around 100 meteors / hour. However, this year, an almost full moon will make it difficult to observe the weakest meteors. The best time for observation will be the dawn of August 13 just before dawn and with the Moon already set.
Miquel Serra-Ricart, IAC astronomerHe explains: "This year the early risers will have a prize. The appointment will be the dawn of August 13. If we get up at 6 in the morning and we are in a place without light pollution and without clouds, the show is assured" and adds "As always, we must be patient. In 15 minutes we will surely count them by tens if we look at a point in the sky."
A rain with history
The calls 'Shooting Stars'They are, in fact, small particles of dust of different sizes, some smaller than grains of sand, which comets – or asteroids – leave along their orbits around the Sun and that come off due to the "thaw" produced by solar heat The resulting cloud of particles (called meteoroids) disperses through the comet's orbit and is traversed every year by The earth in its orbit around the Sun. During this encounter, dust particles disintegrate as they enter the Earth's atmosphere at high speed, creating the well-known light strokes that receive the scientific name of meteors.
The Perseids activity, which has as its parent the comet Swift-Tuttle, discovered in 1862, and currently with an approximate size of 26km in diameter, is the largest object that periodically approaches Earth.
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