Tag: science
The sounds of the stars
What is this stuff?
The uncertainty of science: In this week’s release of images from Mars Reconnaissance Orbiter, the science team posted the image on the right and asked, “What is this stuff?”
Here’s a hypothetical geologic history that might explain this scene: layered sediments were deposited by water or airfall (including volcanic pyroclastics). A crudely polygonal patterned ground was created by stresses in the sediments, and groundwater followed the fractures and deposited minerals that cemented the sediments. This was followed by perhaps billions of years of erosion by the wind, leaving the cemented fractures as high-standing ridges.
Of course, this story is almost certainly incomplete if not totally wrong.
Click here to see the close-up subimage from which I cropped the image on the right.
The quasicrystal from outer space
Fun with dry ice
An evening pause: Fun with dry ice.
The second Grail space probe has entered lunar orbit
The second Grail space probe has entered lunar orbit.
The first of two Grail space probes has entered lunar orbit
The first of two Grail space probes has entered lunar orbit.
The terraced slopes of Aristarchus
The science team of Lunar Reconnaissance Orbiter released a spectacular image of the lunar crater Aristarchus on Christmas Day, looking sideways at the crater’s west wall. The image was taken from only 16 miles above the Moon’s surface. You can see the full image here.
Two things to note from this image:
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Samoa will skip Friday to flip across the international dateline to be in synch with its major trading partners in Asia
Jumping into the future: Samoa will skip Friday this week as it shifts across the international dateline to be in synch with its major trading partners in Asia.
The strange deep-sea creatures at a volcanic vent
The strange deep-sea creatures at a volcanic vent. With pictures.
Doh! Top Science Journal Retractions of 2011
Peer-reviewed, every one! The top science journal retractions of 2011.
A family struggles to complete a Knoxville to Nashville trip using an electric car
An exercise in absurdity: A family struggles to complete the 180 mile trip from Knoxville to Nashville using an electric car.
The Blink fast-charge station was on the blink. Efforts to use the two available plugs yielded nothing for Stephen Smith when he and his family arrived in Lebanon in their electric vehicle.
But all was not lost as the Smiths closed in on their destination – a brother’s house only 22 miles away in Antioch. With ten miles of available power left on their car, they could take advantage of a slower charger next to the other at the Blink station at Cracker Barrel. It took about an hour, but the boost gave enough energy for a total of 30 miles.
They also had to pay attention to whether the route was flat or hilly, as any hills significantly reduced their range of about 75 miles. In addition, they found that even that number was unreliable, and that often the maximum range the car could travel was far less.
Even the fast-charge station still needed about 30 minutes to charge up the car. Imagine having to wait 30 minutes every time you needed to fill up, and imagine having to do it every 70 miles.
There is a reason electric cars can’t compete with gasoline, and this journey illustrates it.