The striking enhanced color image of blue-hued sand dunes on Mars led some readers to ask what that means. Above is a side-by-side image in what scientists call "true color" on the left and enhanced on the right. The color humans would perceive is probably somewhere between the two, depending on conditions. Here's the difference:
These two color views of the asteroid Gaspra were produced by combining three images taken through violet, green, and infrared filters by the Galileo spacecraft on October 29, 1991, from a distance of about 16,000 kilometers (10,000 miles). The view on the left shows Gaspra in approximately true color; the surface is covered with rocks that are somewhat less grey than those on Earth's moon. In the version on the right, the colors were enhanced to bring out the muted color variations on the asteroid and to increase the ability to discriminate between surface features. The subtle variations in color may be due to slight differences in rock composition or to differences in the texture of the surface layer.
Writing for the New York Times, Heather Murphy has a fascinating story about the unexpected results of a bone marrow transplant. When a patient receives a bone marrow transplant, the patient’s own cells are destroyed and replaced with cells from a donor. Thereafter, the patient is a “chimera,” with two sets of DNA. It’s believed […]
The Australian Acoustic Observatory project, described by its creators as a kind of “Google Street View of sound,” is a new acoustic sensor network of hundreds of microphones and digital audio recorders distributed across multiple remote ecosystems on the continent. The solar-powered system will record animal and natural sounds continuously for 5 years. According to […]
The good news: Software like Adobe Premiere Pro, Camtasia and Final Cut Pro has opened up a ton of possibilities for desktop videographers. On the other hand, their use is so widespread that you have to be an expert in them before you can even think about a career in the field. That’s a requirement […]
There are a lot of high-tech drones and RC planes flooding the market lately, and the innovations are coming so fast on each new iteration, most of them forget one crucial thing: Flying these is supposed to be fun. Here’s an alternative that keeps that ethic firmly in mind: The Moskito Smartphone-Controlled Plane. This thing […]
There are few intellectual exercises better than a good game of chess against a capable opponent, which is why a lot of old hands at the gameplay it online. But there’s still nothing like the tactile thrill of moving a knight into checkmate. (Or sweeping the pieces off dramatically when you lose.) That’s why we’re […]