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Space travel may cause genetic changes: NASA

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7 years ago

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Space travel may cause genetic changes: NASA

Washington: NASA scientists in an unprecedented study have found that space travel may alter gene expression. The study involved astronaut Scott Kelly, who spent a year in space and his identical twin Mark who stayed on Earth.  From the lengths of the twins’ chromosomes to the microbiomes in their guts, “almost everyone is reporting that we see differences”, Christopher Mason, a geneticist at Weill Cornell Medical College in New York City, was quoted as saying to scientificamerican.com.  The changes that are likely attributable to Scott’s time in orbit include alterations to gene expression, DNA methylation — the reversible addition of a chemical marker that can affect gene expression — and other biological markers.

DNA methylation decreased in Scott during flight and increased in Mark over the same period.  Levels for both men returned close to pre-flight levels after Scott came back to Earth, according to the preliminary results published in the journal Nature.  “What this means isn’t yet clear,” said Andrew Feinberg, a geneticist at Johns Hopkins University in Maryland, US. The researchers also reported changes in gene-expression signatures between the twins. Such changes happen in earthbound people all the time, associated with environmental shifts such as changes in diet and sleep habits.

However, the changes in Scott seemed to be larger than normal – perhaps due to the stress of eating frozen food and trying to sleep while floating in space, Mason said. But, because the Kelly twins are just two people, the results may not be generalised, the study said. Scott spent 340 days in space during 2015-2016, giving him a lifetime total of 520 days, while Mark, also an astronaut, had previously flown in space for a total of 54 days over four space-shuttle missions between 2001 and 2011.

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Apple is giving a huge discount on its gadgets: Details inside

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2 years ago

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May 5, 2022

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If you want to buy an iPhone and were waiting for a nice offer, then we have a piece of good news for you! Amazon Summer Sale May 2022 has begun and they are offering major discounts on various smartphones, laptops, and smart TVs, among others.

The sale is live now on the e-commerce platform with no-cost EMI options and exchange discounts on various products. In addition to this, Amazon has also partnered with several banks including ICICI, Kotak Bank, and RBL so that customers get instant discounts of up to 10% using their cards and EMI transactions.

Customers can easily enjoy this summer sale and get massive discounts on iPhones. They can also compare prices on Flipkart Big Saving Days Sale 2022 before making a purchase.

 

Amazon Summer Sale May 2022: Discount offer on iPhone 13 

Apple’s coveted phone model iPhone 13 in the 128 GB storage model will be available during the Amazon Summer Sale May 2022 for Rs 64,900. The MRP of the phone is Rs 79,900. This means that the customers will be able to enjoy a discount of up to Rs 15,000 on the purchase of the iPhone 13.

If you have an old iPhone in working condition then you will also be eligible to receive another additional discount worth up to Rs 17,000 on the iPhone 13.

Buy at Rs. 64,900 (MRP – Rs. 79,900)

Features of Apple iPhone 13 

The iPhone is powered by an A15 Bionic processor with 6 core CPU. Apart from this, it has 16 core neural engines. With the iPhone 13, up to 512 GB of storage will be available. The iPhone 13 has a 6.1-inch Retina XDR display with 1000 nits brightness.

The iPhone 13 has a 12-megapixel dual rear camera setup. This time a new wide-angle camera has been given, whose aperture is f/1.6. With this, there is support for sensor optical stabilisation. Night mode has been made better than before. The second lens is also 12 megapixels ultra-wide and has an aperture of f/2.4.

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