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World News Astronomers have traced the timeline of a stellar explosion in a neighboring galaxy using data from three NASA telescopes. Using the data from the three telescopes, astronomers were able to create a composite image of SNR 0519, which NASA released on Sept. 12. The Chandra data captures X-rays from SNR 0519 with low, medium and high energies shown in green, blue, and purple, respectively.
Optical data from Hubble shows the perimeter of the remnant in red, along with surrounding stars in white. The brightest regions in the X-ray data represent the slowest-moving material, whereas areas with no X-ray emissions are associated with faster-moving material, according to the statement.
“When you’re on Earth, gravity is pulling fluid to the bottom half of our body, which is why some people find their legs begin to swell up toward the end of the day. But when you go into space that gravitational pull disappears, which means the fluid shifts to the top half of your body and that triggers a response that fools the body into thinking there’s too much fluid,” Dr. Tucker said.
“As a result, you start going to the toilet a lot, you start getting rid of extra fluid, you don’t feel thirsty and you don’t drink as much, which means you become dehydrated in space. This is why you might see astronauts on the news faint when they step foot on Earth again. This is quite a common occurrence as a result of space travel, and the longer you’re in space the more likely you are to collapse when you return to gravity. The purpose of our model is to predict, with great accuracy, whether an astronaut can safely arrive on Mars without fainting. We believe it’s possible.”
Because of the communication delay between Mars and Earth, astronauts must be able to perform their tasks without immediate help from support teams. According to Dr. van Loon, this window of radio silence varies depending on the positioning of the Sun, Earth, and Mars in their orbits, but it can last at least 20 minutes.
“If an astronaut faints when they first step out of the spacecraft or if there’s a medical emergency, they’ll be nobody on Mars to help them,” Dr van Loon said.
“This is why we must be absolutely certain the astronaut is fit to fly and can adapt to Mars’ gravitational field. They must be able to operate effectively and efficiently with minimal support during those crucial first few minutes.”
To simulate the hazards of traveling to Mars, the model employs an algorithm based on astronaut data acquired from previous space expeditions, including the Apollo missions. World News
This would provide the researchers with a more complete picture of what would happen if an “everyday” individual traveled into space.
