Wednesday, August 19, 2020

MARTE / EN LA SUPERFICIE DEL PLANETA ROJO

Detectan que las gigantescas "megaolas" de arena en Marte ...
Están en movimiento, hasta ahora se había considerado que estás olas de arena eran estáticas según los científicos ... 


Un nuevo estudio, liderado por la científica planetaria Simone Silvestro del Observatorio Astronómico INAF de Capodimonte en Italia, revela que las llamadas 'megaolas' —enormes olas de arena observadas en la superficie de Marte— son estructuras móviles, pero que se mueven a una velocidad muy lenta. 
Para llegar a esta conclusión, el equipo de Silvestro estudió imágenes tomadas durante varios años por la cámara HiRISE (Experimento de imágenes de alta resolución) del orbitador Reconaissance de la NASA.

Se reveló que entre 2007 y 2016, las 'megaolas' en dos lugares del planeta rojo, el cráter Nili Fossae y McLaughlin, cambiaron a velocidades promedio de hasta 12 centímetros por año, con una velocidad máxima registrada de 19 centímetros por año. Los resultados de la investigación fueron publicados en Journal of Geophysical Research: Planets.


Las 'megaolas', que también se observan en los desiertos terrestres, están compuestas de granos de arena gruesos en la parte superior de sus crestas, ubicados sobre granos más finos en la parte inferior. La rigidez de los granos de la cresta, junto con los vientos muy débiles de la atmósfera, hizo que los científicos pensaran que estas estructuras deben ser formaciones estáticas e inamovibles.

"Tuvimos la oportunidad de ver estas 'megaolas' en movimiento porque ahora tenemos más de 10 años de observaciones", dijo Silvestro al portal Inside Science. Además, los investigadores sugieren que la proximidad de grandes dunas de arena ubicadas en las áreas estudiadas podría estar contribuyendo a cambiar las 'megaolas'. Es decir, las dunas de grano más fino proporcionan un alto volumen de flujo de arena que con el viento puede ayudar a desplazar los granos gruesos encima de las crestas.

Leer el articulo completo y ver el vídeo, clic! enlace: Actualidad.rt.com / Ciencia 
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Posted by daybydaypregnancy at 4:55 AM

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Why Should you take care of Day by Day Pregnancy?


Taking care of your baby and your body on Day by Day Pregnancy

If you're pregnant now, you should know how important is to take care of yourself and your future baby. Well, pregnant is something that every married girl dream of. Sooner or later, after you married and settle down, your husband and yourself will love to have a new comer in your house, especially if only both of you living together without living with your other family members like your parents, grandparents or any other sibling

It is extremely important to take care of your baby and yourself on day by day pregnancy. You must eat the right food and make sure that the food you ate will not harm your baby and yourself.

Yes, pregnant is great, eating right and good nutrition food for your baby is a must! but how about the excessive pounds you will get when you're pregnant and after you delivered? is it something that you must consider of? as a woman, it is extremely important to take care of our weight, fat means ugly, and what happen when we're fat? of course, we will lost our self confident at first. And what happen when we lost our self confident?

If you're not even dare to look at yourself in the mirror, do you think that your belove husband will like to hug you, kiss you and look at you like before? even if your husband looks at you like before, you might probably think, "what's wrong with him, he look at my fat meat all the time!"

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