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Sun-like stars not all that dusty

Published

10 years ago

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Washington: Sun-like stars  are not all that dusty, reveals a new study, adding that less dust means better odds of snapping clear pictures of the stars’ planets in the future.

“Dust is a double-edged sword when it comes to imaging distant planets. The presence of dust is a signpost for planets but too much dust can block our view,” said Bertrand Mennesson from NASA’s Jet Propulsion Laboratory, Pasadena, California.

These results come from exoplanet_gemini_bigsurveying nearly 50 stars from 2008 to 2011 using the Keck Interferometer, a former NASA key science project that combined the power of the twin WM Keck Observatory telescopes atop Mauna Kea in Hawaii.

In the latest study, mature, Sun-like stars were analysed with high precision to search for warm, room-temperature dust in their habitable zones.

The other stars in the study were already known to have significant amounts of distant, cold dust orbiting them.

Many of such stars were found to also have the room-temperature dust.

This is the first time a direct link between the cold and warm dust has been established.

“In other words, if a star is observed to have a cold belt of dust, astronomers now can make an educated guess that its warm habitable zone is also riddled with dust, making it a poor target for imaging exo-Earths,” Mennesson said.

The next challenge is to image smaller planets in the “habitable” zone around stars where possible life-bearing “exo-Earths” – Earth-like planets outside the solar system – could reside.

The paper appeared in the Astrophysical Journal.

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

Published

3 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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