Theories of the formation and early evolution of planetary systems postulate that planets are born in circumstellar disks, and undergo radial migration during and after dissipation of the dust and gas disk from which they formed. The precise ages of meteorites indicate that planetesimals—the building blocks of planets—are produced within the first million years of a star’s life. Fully formed planets are frequently detected...
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Long-awaited Costco switch to Visa cards begins today
Good news for Visa holders: Starting today you can finally use your credit cards at Costco.
For many years, Costco shoppers could only use American Express credit cards. The long-awaited switch to Visa took effect Monday.
Issaquah-based Costco also...
Mean first-passage times of non-Markovian random walkers in confinement
The first-passage time, defined as the time a random walker takes to reach a target point in a confining domain, is a key quantity in the theory of stochastic processes. Its importance comes from its crucial role in quantifying the efficiency of processes as varied as diffusion-limited reactions, target search processes or the spread of diseases. Most methods of determining the properties of first-passage...
Farewell to the USA: Solar Impulse plane starts four-day odyssey across the Atlantic
The all-electric Solar Impulse 2 plane left America’s shores tonight and began what’s expected...
Evolution: Gene regulation in transition
An in-depth analysis of a close relative of animals, Capsaspora owczarzaki , provides clues to the changes in gene regulation that occurred during the transition to multicellularity.
Nature doi: 10.1038/nature18447
Paul Allen’s Stratolaunch lifts veil on world’s biggest plane — a giant bet on a new way to space
Cell biology: Membrane kiss mediates hormone secretion
Communication between cells relies on hormone release from secretory granules, but how these vesicles fuse with cell membranes is unclear. An imaging study provides in vivo evidence for a stable intermediate fusion step.
Nature doi: 10.1038/nature18446
Week in Review: Most popular stories on GeekWire for the week of June 12, 2016
Get caught up on the latest technology and startup news from the past week. Here are the most popular stories on GeekWire for the week of June 12, 2016.
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Top 5 cool things from E3 2016, despite a smaller feel and fewer exhibitors
While this year’s announced attendance was up at the E3 game convention, the number of exhibitors was significantly smaller, and many parts of the show floor felt almost quiet. Disney Interactive and EA didn’t attend,...
Defining the consequences of genetic variation on a proteome-wide scale
Genetic variation modulates protein expression through both transcriptional and post-transcriptional mechanisms. To characterize the consequences of natural genetic diversity on the proteome, here we combine a multiplexed, mass spectrometry-based method for protein quantification with an emerging outbred mouse model containing extensive genetic variation from eight inbred founder strains. By measuring genome-wide transcript and protein expression in livers from 192 Diversity outbred mice, we identify...