Astronaut Thomas Pesquet, who is taking a spacewalk with Shane Kimbrough today, will be adding lubricant to the Latching End Effector, the "hand" at the end of the Space Station Remote Manipulator System, otherwise known as Dextre.
An anonymous reader shares a VanityFair report: These days, it takes less than 60 seconds to know what the general consensus on a new movie is -- thanks to Rotten Tomatoes, the review aggregator site that designates a number score to each film based on critical and user reviews. Although this may be convenient for moviegoers not necessarily interested in burning $15 on a critically subpar film, it is certainly not convenient for those Hollywood directors, producers, backers, and stars who toiled to make said critically subpar film. In fact, the site may be "the worst thing that we have in today's movie culture" -- at least according to Brett Ratner, the Rush Hour director/producer who recently threw the financial weight of his RatPac Entertainment behind Batman v Superman: Dawn of Justice. Sure, the blockbuster made over $850 million worldwide in spite of negative reviews ... but just think of how much more it could have made had it not had a Rotten Tomatoes score of 27 percent! Last week, while speaking at the Sun Valley Film Festival, Ratner said, "The worst thing that we have in today's movie culture is Rotten Tomatoes. I think it's the destruction of our business."
According to NASA, Arctic sea ice appears to have reached on March 7 a record low wintertime maximum extent. On the opposite side of the planet, Antartica ice hit its lowest extent ever recorded by satellites (since satellites began measuring sea ice in 1979) on March 3 at the end of summer in the Southern Hemisphere. Science Daily reports: Total polar sea ice covered 6.26 million square miles (16.21 million square kilometers), which is 790,000 square miles (2 million square kilometers) less than the average global minimum extent for 1981-2010 -- the equivalent of having lost a chunk of sea ice larger than Mexico. The ice floating on top of the Arctic Ocean and surrounding seas shrinks in a seasonal cycle from mid-March until mid-September. As the Arctic temperatures drop in the autumn and winter, the ice cover grows again until it reaches its yearly maximum extent, typically in March. The ring of sea ice around the Antarctic continent behaves in a similar manner, with the calendar flipped: it usually reaches its maximum in September and its minimum in February. This winter, a combination of warmer-than-average temperatures, winds unfavorable to ice expansion, and a series of storms halted sea ice growth in the Arctic. This year's maximum extent, reached on March 7 at 5.57 million square miles (14.42 million square kilometers), is 37,000 square miles (97,00 square kilometers) below the previous record low, which occurred in 2015, and 471,000 square miles (1.22 million square kilometers) smaller than the average maximum extent for 1981-2010.
A new project aims to create an efficient, simple-to-manufacture oxygen-evolution catalyst that pairs well with semiconductors for advanced solar cells. The technique could lead to unique catalysts for other applications.
Researchers have developed a new algorithm that predicts when a user will leave a mobile game. This information is useful for game studios so that they can design strategies to maintain the player's interest.