test

How NASA tests an against-all-odds Mars rover landing

It's not every day that you land a spacecraft on Mars, even if you're NASA. And in the case of the Curiosity rover, hurtling toward a Mars landing as Sunday night turns into Monday morning, the space agency is tempting fate with a novel approach that involves a big parachute, a specially designed winch, and some very high hopes.

The rover's descent through the Martian atmosphere, which NASA has dubbed the "Seven Minutes of Terror," will be an edge-of-your-seat experience, despite the space agency's excruciating preparations.

Consider, for instance, just one key element that … Read more

Defcon vending room showcases tech of all ages

LAS VEGAS -- While ninjas inhaled much of the available oxygen in the vendors room, with its truck-based Ninja Tel mobile network, other vendors offered a more esoteric menu of hackables at Defcon this year.

Vendors at the hackers conference came in all sizes. Some signed up hackers to donate their skills to impoverished communities. Others appealed to sartorially minded hackers, with unofficial Defcon 20 T-shirts and other wearables.

In this gallery, CNET showcases three vendors who were offering something interesting or unexpected: Hak5's Darren Kitchen and his penetration-testing tools; Meco proprietor Ira Moser and his collection of antiquated … Read more

Episode 6: The most extreme torture test yet

This is the week that the torture test really comes into its own, I think. We decided to toughen up and test the brand-new 11-inch Apple MacBook Air. Yeah, I know. Yikes. But I really want to test portable devices, and the Air is the epitome of portable, is it not?

We're down to a good rhythm with heat, cold, dropping, and water, and we're really trying to figure out how to make the wild card tests true to life. So, when three or four viewers tweeted me and told me they had put their MacBook Airs on … Read more

iPad and Nexus 7 face off in torture test

I've been working the device torture beat here for a while, but this video of an iPad and Google Nexus 7 going head-to-head in drop and submersion tests almost gave me a full-blown case of DTSD (device trauma stress disorder).

Once again, the device warranty folks at SquareTrade subjected two devices to some low-level maiming to see which survives with the least damage and the iPad suffered the most battle scars, at least from the drops. … Read more

CNET tablet battery life results

Editor's note:This list was originally posted on July 25 and is updated regularly.

Battery life testing is one of the last evaluations we subject tablets to at CNET Labs, but by no means is it the least valued. How long you can use your tablet is nearly as important as what it is you do while using it.

Our CNET labs testing standards ensure that all tablets, regardless of size, color, or operating system, are tested as close to equally as possible. Details on how we test tablets are included below the testing results chart. We've also … Read more

Getting schooled with the Air Force's elite test pilots

EDWARDS AIR FORCE BASE, Calif.--He might be the most famous airman in the history of the U.S. Air Force, and he's a graduate of the Test Pilot School.

In 1947, Capt. Chuck Yeager became the first person to break the sound barrier, hitting Mach 1.0 in a Bell X-1 rocket plane 42,000 feet above this Mojave Desert outpost. And today, to commemorate the import of the event that ushered in the supersonic era, the aircraft hangs from the ceiling in the entryway of the Smithsonian's Air & Space Museum in Washington, D.C.

Yeager … Read more

Episode 4: Torture-testing the Samsung Galaxy S3

I think we're starting to get better at this torture-test thing, which is bad news for gadgets.

In preparing to test the Samsung Galaxy S3, I decided the oven we used for the iPad test didn't seem quite right. So I set about trying to devise a new heat contraption that would simulate the baking hot interior of a car parked in the sun, or the heat of the sun on a phone sitting out on the beach, or a similar real-life heat test.

At first, I was on the hunt for some kind of a heat-proof box … Read more

How Nevada became America's Nuclear Age ground zero

MERCURY, Nev. -- From the side that faced away from the blast, you might never even have bothered to look at this concrete dome. But walk around the other side, and there's no question something extraordinary happened here.

Welcome to the Nevada National Security Site, formerly known as the Nevada Test Site. As part of Road Trip 2012, I've come to visit this 1,375-square-mile expanse of harsh desert and even harsher mountains that begins about 75 miles north of Las Vegas. Here, from 1951 through 1992, a total of 928 nuclear weapons exploded, many of them sending … Read more

Check your mental speed with Brain Speed Test

There are lots of ways to measure the speed of your personal computer, but how about that most personal computer of all, the human brain? Brain Speed Test from Brain Computers is an ultrasimple, ultracompact program that tests your mental reaction time and makes it possible to compare your results with others'. It doesn't test your intelligence or mental ability, just your brain speed. Anyone who has mastered second-grade math and basic typing can take the Brain Speed Test, and none of the tests uses numerals larger than 9. Because you must type in your answers, Brain Speed Test … Read more

Torture-testing the new iPad

Spoiler alert: the new iPad is one tough device.

I'll leave a little mystery for you: I won't tell you exactly what we did to the iPad in our first-ever Always On torture test, but generally speaking, we tried to simulate some of the toughest tests that real life throws at our devices, like say, when we leave them in cars in inclement weather, or they fall, or ... well, darnit, now I'm verging on spoiling the tests.

What I'm trying to say, though, is that we weren't just stunt joyriding by shoving the iPad in … Read more