Doctors have poked and prodded NASA astronauts for years, and the astronauts, as government employees, have largely acceded to their roles as test animals in studying how an alien environment outer space affects the human body. But professional astronauts have historically been a small slice of humanity. Initially, they were chosen from the ranks of military test pilots
Who gets sick in space? Orbital tourists may offer better clues bdnews24.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from bdnews24.com Daily Mail and Mail on Sunday newspapers.
Yuri Gagarin se había convertido en el primer cosmonauta humano en 1961, la misión
Apolo 11 de la NASA encabezada por los astronautas Neil Armstrong, Edwin Buzz Aldrin y Michael Collins, marcaría el curso de la historia. Los dos primeros lograron pisar por primera vez la superficie lunar, mientras que el tercer integrante, Collins, daba vueltas al Satélite natural de la Tierra en el módulo de mando. La hazaña tuvo dos grandes objetivos: el primero era geopolítico y se trataba de ganar la carrera espacial que enfrentaba a EUA con la Unión Soviética en el marco de la Guerra Fría; y el segundo, de corte más técnico, era seguir consolidando los viajes de estudio y reconocimiento de la superficie lunar, para recoger información sobre la estructura del satélite y sus movimientos. Desde ese día, “el hombre” volvió a la luna seis veces más entre 1969 y 1972.
NASA is working on a new project to study how space impacts the spine
Nine astronauts on the ISS had been scanned before leaving Earth
Upon returning, scientists will take another scan and compare the two
The team hopes scans will show how much bones hallow while in space
The results could lead to strategies to combat bone and muscle loss in space
White noise (and pink and brown): The science behind the sounds
What’s your favorite bedtime jam? Do you doze off to jazz, a babbling brook, a crackling fire or a whirling fan of white noise? Or maybe you’re a sound aficionado, and have replaced your white noise machine with one that provides the more fashionable pink or brown noise?
Whatever your pleasure, know this: While continuously listening to low decibel calming sounds at night doesn’t appear to be harmful, there also isn’t much science behind how, why or even if sound machines help sleep.
“So many people are using it that the public health consequences of this are potentially ‘ginormous,’ yet right now we have little to no research on this,” said Dr. Mathias Basner, a professor in the division of sleep and chronobiology at the University of Pennsylvania School of Medicine, who published a systematic review of research on noise as a sleep aid.