Brazilian sky receives peak of Lyrid meteor shower on Thursday with ideal visibility By Carolina Costa
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The Brazilian sky will be the stage for an astronomical spectacle in the early hours of this Thursday (23). The Líridas meteor shower will reach its peak visibility, offering favorable conditions for naked-eye observation across much of the country. Especialistas indicate that the Norte and Nordeste regions will have a privileged view of the celestial phenomenon. São expected between 10 and 20 meteors per hour cutting through the Earth’s atmosphere.
Este annual event is caused by Terra passing through the debris left by Cometa Thatcher. Esses fragments, upon entering the atmosphere at approximately 46 kilometers per second, ignite. Eles form the fast, bright trails observed. As Líridas are one of the oldest meteor showers documented by humanity, with records dating back about 2,500 years. The responsible comet takes approximately 415 years to complete an orbit around Sol.
Líridas: Horários and regions with better visibility
The peak of the phenomenon, that is, the phase of greatest intensity, is predicted for the darkest hours of the morning. Observadores may notice more intense activity from 2 am. Neste period, the radiant, the apparent point from which meteors appear to appear in the sky, will be in a higher position. Essa condition optimizes viewing for all viewers. Visibility is considered favorable in 2024, especially due to the low interference from lunar light, which normally hinders the observation of astronomical events. Lua will be in a phase that will allow for darker, more conducive skies.
The intensity of observation can vary significantly depending on the geographic location in the country. However, early morning is established as the ideal period in all areas. Moradores from the Norte and Nordeste regions, for example, should begin their observations from 11:30 pm on Wednesday. Já For the inhabitants of Sudeste and Centro-Oeste, the best time to contemplate the phenomenon occurs a little later, from 1:30 in the morning. No Sul from Brasil, the meteor shower tends to gain strength around 3 am. Projeções based on Stellarium software indicate an average of 18 meteors per hour. Contudo, in exceptional conditions of clear skies and darkness, this number can surprisingly reach up to 90 luminous objects per hour.
Recomendações for observing light trails
Para fully enjoy the Líridas meteor shower, some precautions and location choices are essential. The main recommendation is to look for areas with minimal light pollution, far from big cities and their artificial lights. Essas conditions are crucial for the eyes to adapt to darkness and be able to detect the faintest tracks. Além In addition, directing your gaze to the northern portion of the sky will increase the chances of catching the meteors in their fullness, as it is in this direction that the radiant of Líridas is located.
A sky completely clear of clouds is also crucial for a good view of the astronomical event. Mesmo small cloud formations can obscure the passage of meteors. It is advisable to consult the local weather forecast before planning to observe. The Lua’s low light interference on this particular night favors a darker, clearer viewing environment. Portanto, any artificial light source close to the viewer should be avoided to maximize the experience.
- Escolha the location:Procure areas with little light pollution, away from urban lights.
- Olhe to the north:Direcione your gaze to this region of the sky where the radiant is located.
- Céu clean:Garanta that there are no clouds blocking visibility.
- Baixa moon light:Aproveite to little interference from Lua for a darker sky.
- Evite artificial lights:Desligue or move away from any light source that may obscure your vision.
Origem and features of Cometa Thatcher
As Líridas are considered one of the oldest meteor showers ever documented by humanity. Sua occurrence is directly linked to the passage of Terra through a trail of cosmic particles. Essas particles are remnants of Cometa C/1861 G1 Thatcher. Every year, our planet crosses this trail of debris, resulting in the phenomenon. Comet Thatcher, a long-orbiting celestial body, takes approximately 415 years to complete a single revolution around Sol, which explains the cyclical and predictable nature of the meteor shower.
The fragments that give rise to Líridas meteors are actually small pieces of rock and dust. Eles detach from the comet as it travels through space. Quando this debris enters the Earth’s atmosphere at about 46 kilometers per second, friction with the air heats it to extreme temperatures. Este Heating causes them to catch fire, producing the bright, rapid trails of light that delight observers. The apparent point of origin of these meteors, known as the radiant, is located near the star Vega. Essa star, in turn, lies in the region between the constellations of Hércules and Lira, hence the name “Lyrids” for the rain.
Observing Líridas offers a unique opportunity to connect with the grandeur of the cosmos. It’s a vivid reminder of the constant interaction between Terra and the celestial objects that share our solar system. The natural spectacle, with its ancient history and ephemeral beauty, invites everyone to a moment of contemplation under the night sky. Ele reinforces the beauty of the natural phenomena occurring above us.
