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on August 24, 2017

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After 37 years, NASA fires up engines on the Voyager 1 space explorer

Voyager 1 is the only man-made object that has crossed the border of our solar system into interstellar space. Launched in 1977, it carries greetings from the planet Earth and some information about our little blue marble. Over the past four decades, as it flew past Jupiter and Saturn and eventually out into the vast reaches of space , it’s been using tiny thrusters to position its antenna so it can communicate with Earth. Since 2014, engineers at the Jet Propulsion Laboratory (JPL) had noticed that the craft’s regular engines, known as altitude control thrusters, were deteriorating after all this time and had become less effective. The engineers began exploring the possibility of using the secondary engines, called trajectory control maneuver thrusters, which are located at the back on the probe. They are identical to the primary control thrusters, but the problem was that they hadn’t been used since 1980, when the spacecraft flew past ...

Dell SE2419HR Review

Simple yet handsome, the Dell SE2419HR ($149.99) is a basic 24-inch monitor for business or home use. To keep its price down, it makes some sacrifices in resolution, port selection, and ergonomics, and its color coverage in our testing wasn’t stellar, but it’s a solid workaday display that should appeal to either consumers or businesses on a tight budget. (We've seen it discounted to well below $100.) A Modest But Adequate Feature Set The SE2419HR is an in-plane switching (IPS) panel, with a 1,920-by-1,080-pixel (1080p) native resolution at a 16:9 widescreen aspect ratio. It's rated for a 1,000:1 contrast ratio. Its resolution is typical of low-priced monitors. A 1080p 24-inch panel still has a respectable pixel density of 92 pixels per inch (ppi), which is fine for everyday or home use, as long as you’re not a photo enthusiast looking for a screen to edit on in pixel-precise fashion. As is typical of IPS displays, the SE2419HR’s viewing angles are wide (rated at 178 de...

iPhone 11 vs iPhone 11 Pro vs iPhone 11 Pro Max: Price in India, Specifications Compared

iPhon 11 vs iPhone 11 Pro vs iPhone 11 Pro Max: Price in India, Specifications Compared iPhone 11 price in India starts at Rs. 64,900, whereas iPhone 11 Pro and iPhone 11 Pro Max, will retail beginning at Rs. 99,900 and Rs. 109,900, respectively. HIGHLIGHTS All three new iPhones are powered by A13 Bionic chip iPhone 11 comes with a Liquid Retina HD display iPhone 11 Pro and iPhone 11 Pro Max have triple rear cameras Appl iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max are official. Unveiled at a press event at Apple Headquarters in Cupertino, California on Tuesday, the new iPhone models pack several new features, including the new A13 Bionic chip. The main highlight, however, of all three iPhone models is their camera capabilities. iPhone 11 Pro and iPhone 11 Pro Max feature three rear cameras, whereas the iPhone 11 comes with a dual rear camera setup. All three iPhones share a number of key specifications as well as differ on the others. In t...

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