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If your iPhone storage is full and your iCloud won't back up because that's also full, Google Photos can help you free up space on your phone. Unlike iCloud, Google Photos offers free unlimited storage of compressed photos and videos. iCloud users who are running out of storage space on their iPhone can use Google Photos to free up a lot of space. Business Insider's A. C. Fowler tried Google Photos after using iCloud for five years and it allowed him to finally free up space on his 16GB iPhone 6s.

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#Google #iCloud #TechInsider

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I Tried Google Photos And I'm Never Going Back To iCloud

Over the last 50 years, spacecraft have landed on over half a dozen worlds. But nowhere has proven more treacherous than the Red Planet — Mars.

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Following is the transcript of the video:

Landing on Mars is easier said than done. Over the last 50 years, spacecraft have landed on over half a dozen worlds. Including Venus, Saturn’s moon Titan, a comet, and more. But nowhere has proven more treacherous than the Red Planet — Mars. To date, only 40% of attempted landings have been successful. But just looking at it, Mars seems pretty harmless, right? It doesn’t have toxic clouds like Venus. And there’s plenty of flat, stable places to land, unlike a comet. But here’s the thing: It’s not what you can see that’s the problem. It’s what you can’t: The atmosphere.

Mars’ atmosphere is 100 times thinner than Earth’s. Because Mars’ atmosphere is so thin, it makes parachutes less effective. 10 times less effective, in fact. So, let’s say you could skydive on Mars, and you use the same-sized parachute as on Earth. On Earth, skydivers hit the ground running at around 20 mph. But on Mars, you’d be falling at 200 mph on impact. Not good. Now, you could make your parachute larger to slow down more. And that’s partly what NASA does. For example, its Curiosity rover used the largest supersonic parachute at the time, when it landed in 2012.

But even that couldn’t slow Curiosity down, enough. To see why let’s go back to skydiving. If you wanted to slow down to the same landing speed (20 mph) on Mars as on Earth you’d need a parachute that’s 10 times wider. Or about 110 feet in diameter. Wide enough to cover the length of 2.4 school buses. Now, here’s the catch: NASA’s Curiosity rover weighs about 13 times more than the average human. Which means, to slow down to the same speed, it would need an even bigger chute. One that was 400 feet in diameter. But, in reality, Curiosity’s parachute was nowhere near that size. It was only 70 feet in diameter.

Why? Because the bigger the chute gets, the greater the chance it will rip. In fact, the largest parachute ever built and tested was just 150 feet wide. So, in the end, it’s physically impossible to build a parachute big enough. Which makes landing on Mars risky at best. So, how do space agencies do it? Very carefully.

First, the spacecraft deploys its giant parachute to slow down as much as possible  — usually to around 200 mph. Then, it fires retrorockets to take it the rest of the way.

And that might not sound so hard but if the parachute doesn’t deploy at the right time, or the rockets don’t fire at the right height, it’s all over. To date, only three space agencies have ever tried to land on Mars: NASA, the European Space Agency, and the former Soviet Union. None have a perfect record.

So, if landing on Mars is so hard, why do we keep doing it in the first place? Besides the Moon, Mars has more artificial instruments on and around it than anywhere else in the solar system. And you could say that’s because Mars is close by. Or that it might be the best spot to search for signs of alien life. Or could it be that with each successful new landing we come one step closer to the grandest ambition of all: To become the first species ever to inhabit a world beyond our own.

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Why Mars Is The Hardest Planet To Land On

Saturn is losing its rings faster than previously thought. Scientists estimate the rings will be gone in 100 million years.

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#Saturn #Space #TechInsider

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Saturn Is Officially Losing Its Rings

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