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NASA’s MAVEN probe completes deep dips on Mars

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9 years ago

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Washington: NASA’s Mars Atmosphere and Volatile Evolution (Maven) spacecraft has completed the first of five deep-dip manoeuvers designed to gather measurements closer to the lower end of the Martian upper atmosphere.

“During normal science mapping, we make measurements between an altitude of about 150 kms and 6,200 kms above the surface,” said Bruce Jakosky, MAVEN principal investigator at the University of Colorado.

“During the deep-dip campaigns, we lower the lowest altitude in the orbit, known as periapsis, to about 125 km which allows us to take measurements throughout the entire upper atmosphere,” he said.

The 125-km altitude difference may not seem like much but it allows scientists to make measurements down to the top of the lower atmosphere.

“We are interested in the connections that run from the lower atmosphere to the upper atmosphere and then to escape to space,” said Jakosky.

The first deep dip campaign ran Feb 10 to Feb 18.

The first three days of this campaign were used to lower the periapsis.

Each of the five campaigns lasts for five days allowing the spacecraft to observe for roughly 20 orbits.

Since the planet rotates under the spacecraft, the 20 orbits allow sampling of different longitudes spaced around the planet, providing close to global coverage.

One of the major goals of the MAVEN mission is to understand how gas from the atmosphere escapes to space and how this has affected the planet’s climate history through time.

In being lost to space, gas is removed from the top of the upper atmosphere.

But it is the thicker lower atmosphere that controls the climate.

“MAVEN is studying the entire region from the top of the upper atmosphere all the way down to the lower atmosphere so that the connections between these regions can be understood,” Jakosky said.

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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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