Cervantes

Hoy es el día más hermoso de nuestra vida, querido Sancho; los obstáculos más grandes, nuestras propias indecisiones; nuestro enemigo más fuerte, el miedo al poderoso y a nosotros mismos; la cosa más fácil, equivocarnos; la más destructiva, la mentira y el egoísmo; la peor derrota, el desaliento; los defectos más peligrosos, la soberbia y el rencor; las sensaciones más gratas, la buena conciencia, el esfuerzo para ser mejores sin ser perfectos, y sobretodo, la disposición para hacer el bien y combatir la injusticia dondequiera que esté.

MIGUEL DE CERVANTES
Don Quijote de la Mancha.

31 de julio de 2018

MIDAS cameras spot pair of lunar flashes caused by meteoroid impacts

by Brooks HaysWashington (UPI) Jul 30, 2018

New images from the European Space Agency showcased a pair of recent lunar flashes.
Photographs of the flashes were captured using CCD cameras at a trio of observatories in Spain, which make up the MIDAS project. CCD stands for "charge coupled device."
Lunar flashes occur when space rocks collide with parts of the moon facing away from the sun. Because these parts of the moon aren't reflecting the sun's light, the impact-induced sparks appear especially bright.
The two flashes, separated by less than 24 hours, occurred on different parts of the darkened moon. The latest analysis suggests they were caused by the impact of two walnut-sized meteoroids, both likely part of the Alpha Capricornids meteor shower.
Earth and its moon are currently passing through the trail of dusty debris left behind by the comet 169P/NEAT. When small fragments collide with Earth's atmosphere, they can produce visible streaks of light -- shooting stars. The moon's atmosphere is nonexistent, so the tiny fragments collide directly with the lunar surface.
The MIDAS project's CCD cameras continue to help astronomers document these collisions.
"By studying meteoroids on the moon we can determine how many rocks impact it and how often, and from this we can infer the chance of impacts on Earth," Jose Maria Madiedo from MIDAS said in a news release.
Last week, the moon was darker than usual, as it passed through Earth's shadow. Friday's lunar eclipse marked the longest total lunar eclipse in decades.
Images captured by ESA revealed the moon in brilliant red tint, as sunlight refracted by Earth's atmosphere reflected off the shaded lunar surface.

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