New Antenna Could Give Mars Rovers a Direct Line to Earth
Currently, robotic rovers on the surface of Mars communicate with Earth by first relaying messages to a satellite orbiting the Red Planet; but the new antenna would cut out the middle-man and allow rovers to communicate directly with scientists back home. The new antenna design would also dramatically increase the available communication time between Red Planet rovers and Earth, according to a statement from the University of California at Los Angeles.
The new design combines many small antennas, known as antenna elements, into a larger single antenna, using a unique geometry. The new instrument can transmit and receive signals with greater power than current rover antennas are capable of.
New hospital computer ‘can predict death’
The machine is able to determine a patient’s condition and outcome by combining existing patient records with data obtained through real-time monitoring equipment. The software is so sophisticated that it can diagnose what is wrong with a patient sometimes even before a doctor can and is even able to use what it has learned to predict when someone is most likely to die with an eerily high rate of accuracy.
“We can predict with almost a 96% confidence that these patients will have this probability of dying – so, the computer says you’re gonna die, you’re probably going to die in the next 30 days,” said project leader Dr Steven Horng.
Every three minutes the computer measures a patient’s vital signs and then uses its database of 250,000 records to compare and analyze their condition and to predict probable outcomes.
Source: Unexplained Mysteries
Confirmed: Enceladus Has A Global Ocean
The Saturnian moon spouts giant plumes of water vapor from its southern pole, and gravity data indicate it likely harbors a liquid ocean beneath its surface, warmed by the friction of Saturn’s gravity deforming the moon’s rocky core.
Until now, scientists weren’t sure how big that subsurface ocean might be. Now NASA’s Cassini spacecraft has come back with an answer: Enceladus has a global ocean encircling its entire core.
The confirmation comes from studying the moon’s wobble. Enceladus moves slightly faster and slightly slower in different parts of its orbit around Saturn, so it rocks back and forth as it goes. If the moon were completely solid, it wouldn’t wobble nearly as much as it does. Models of Enceladus’ interior indicate that it must have a layer of liquid in between the surface and the core.
Source: Popular Science