Tag Archives: pressure

A first look at the Tesla Model S

I was never that impressed with the Tesla Roadster. It’s easy to make an exciting long-range electric car if you don’t bother to making it affordable or practical.

Now comes Tesla’s next trick. The Model S sedan, available with seating for up to seven, is now on sale. Once it’s in full production, prices will range from $50,000 to roughly $100,000.

The view from the driver’s seat was striking. Wherever possible, knobs and physical gauges have been replaced by computer screens.

There isn’t even a “Start” button. If you have the Tesla’s car-shaped key fob in your pocket and your butt is in the driver’s seat the car — quite reasonably — assumes you want it to turn on. So it does.

It runs in “Accessory” mode, allowing you to use the computer screens and listen to the stereo, until you push down the brake pedal. Then the speedometer and other driving gauges appear and the car is ready to roll.

 

Keep reading: CNN - Tesla Model S review: A good first impression

 

 

Continue reading

Voyager I – about to leave our Solar System

Last week, in the corners of the Internet devoted to outer space, things started to get a little, well, hot. Voyager 1, the man-made object farthest away from Earth, was encountering a sharp uptick in the number of a certain kind of energetic particles around it. Had the spacecraft become the first human creation to “officially” leave the solar system?

It’s hard to overstate how wild an accomplishment this would be: A machine, built here on Earth by the brain- and handiwork of humans, has sailed from Florida, out of Earth’s orbit, beyond Mars, beyond the gas giants of Jupiter and Saturn, and may now have left the heliosphere — tiny dot in the universe beholden to our sun. Had it really happened? How would we know?

We’re not quite there yet, Voyager’s project scientist and former head of NASA’s Jet Propulsion Lab, Edward Stone, told me. The spacecraft is on its way out — “it’s leaving the solar system” — but we don’t know how far it has to go or what that transition to interstellar space will look like.

 

Keep readingGet Ready, Because Voyager I Is *This Close* to Leaving Our Solar System

Continue reading

Life on Mars is possible – for cave dwellers

A study of the biology and geology of Mars, from the Australian National University, shows there is plenty of room for life on Mars.

Granted, much of that room is in caves just below the planet’s surface, and much of that life will likely be microbes rather than little green men. But here’s the kicker — fully 3% of Mars has the right conditions to support life, the researchers say.

…if you run the same numbers on Earth, just 1% of the planet’s volume can support life.

The average surface temperature on Mars is minus 63 degrees Celsius (AFP/HO/File)

Mars’ surface is too cold and too low-pressure to support liquid water…But Lineweaver’s study looked at geological data from decades of Mars missions — and concluded that it would be warm and pressurized enough for life to live just below the surface. Warmth from the planet’s core provides the heat, and soil packed in from above creates the necessary air pressure.

So are there vast empires of microbes — or even something bigger — lurking just below that dusty red surface? We should know more next August when NASA’s Curiosity Rover arrives on Mars. This next-generation space robot comes equipped with a laser beam that can blast rocks, and a robotic arm that can examine the results.

via Mashable

 

More about Mars:

 

// Photo via AFP & thx to Amelia S.