Page 9637
Jul 26, 2018
Star spotted speeding near black hole at centre of Milky Way
Posted by Shailesh Prasad in category: cosmology
Chile’s Very Large Telescope tracks S2 star as it reaches mind-boggling speeds by supermassive black hole.
Hannah Devlin Science correspondent.
Jul 26, 2018
Samsung Made an Unbreakable Smartphone Display
Posted by Shailesh Prasad in categories: electronics, mobile phones
The new display is a combination of flexible OLED panel and fortified plastic cover, with certification from Underwriters Laboratories backing up the unbreakable claim. It’s so strong, no damage was visible after 26 drop tests from a height of 4 feet.
Jul 26, 2018
Lyft might build a ‘zen mode’ to let drivers know you don’t feel like chatting
Posted by Shailesh Prasad in category: transportation
A water body exists below the Martian south polar ice cap.
Without water, no form of life as we know it could exist. There is therefore great interest in detecting liquid water on other planets of our Solar System. Landforms such as dry river valleys and lakes show that liquid water must have been present on Mars in the past (1). Nowadays, small amounts of gaseous water exist in the Martian atmosphere, and some water ice is found on the planet’s surface. Water droplets were seen condensing onto the Phoenix lander (2), and there may be reoccurring water activity on slopes during the Martian summer (3). However, stable bodies of liquid water have not been found on Mars. Published in Science’s First Release this week, Orosei et al. (4) report an analysis of radar data from the Mars Express mission that shows the existence of stable liquid water below 1.5 km of ice, close to the Martian south pole.
Ice caps similar to those on Earth exist at the Martian north and south poles, known as the North and South Polar Layered Deposits (NPLD and SPLD, respectively). More than 30 years ago, Clifford hypothesized that liquid water might be present below the Martian polar ice caps (5). Despite mean annual air temperatures of around −60°C, lakes exist below Earth’s Antarctic ice sheet (6). Glacier ice insulates the bed from the cold surface. Thus, temperatures at the base of the Antarctic ice sheet, which may be as thick as 4.8 km, can reach the pressure melting point of water; the melting point is reduced owing to the pressure of the ice layer above. Water at the ice base reduces basal friction, leading to increased flow speeds. Finding liquid water below the Martian ice caps might solve ongoing debates about whether the NPLD ice flow is due to ice deformation, deformation of the bed, or gliding over the bed or whether it is not flowing at all (7).
Jul 26, 2018
Segway’s autonomous security robots fight crime
Posted by Shailesh Prasad in categories: robotics/AI, security, transportation
Jul 26, 2018
Researchers Achieve New Quantum Entanglement Record
Posted by Shailesh Prasad in category: quantum physics
Jul 26, 2018
Humans could soon achieve ‘electronic immortality’, futurist claims
Posted by Shailesh Prasad in categories: futurism, life extension
Dr Ian Pearson warns ‘electronic immortality’ will require careful planning. It could mean we live on after death in an ‘upgraded body’ — but could also mean we no longer own our own minds.
Jul 26, 2018
Univ. of Washington opens virtual and augmented reality research lab funded by tech giants
Posted by Shailesh Prasad in categories: augmented reality, virtual reality
Seattle’s virtual and augmented reality scene just got a boost, courtesy of the University of Washington and three tech giants.
The UW announced today a new VR and AR research hub called UW Reality Lab, funded by Facebook, Google, and Huawei, which each contributed $2 million for the initiative.
Jul 26, 2018
Liquid Water on Mars! Really for Real This Time (Probably)
Posted by Alberto Lao in category: space
A radar instrument on one of the oldest operational Mars orbiters has discovered possible evidence of present-day liquid water on Mars.
Liquid water on Mars? Again? Yes, again. The announcement came at a press briefing held by the Italian Space Agency in Rome, concerning a paper published today in Science.
How is today’s water-on-Mars hoopla different from all of the past announcements? In brief: the evidence is from a new instrument, examining a new location on Mars, and it’s the first place we’ve seen evidence for a present-day body of water that is liquid and stays liquid. For years.
Continue reading “Liquid Water on Mars! Really for Real This Time (Probably)” »