The merger of two massive (about 30 solar masses) black holes has been detected in gravitational waves. This discovery validates recent predictions that massive binary black holes would constitute the first detection. Previous calculations, however, have not sampled the relevant binary-black-hole progenitors—massive, low-metallicity binary stars—with sufficient accuracy nor included sufficiently realistic physics to enable robust predictions to better than several orders of magnitude. Here...
Tag Archives: Solar
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...
Solar Impulse round-the-world plane lands in NYC after Statue of Liberty photo op
The Solar Impulse 2 airplane finished up more than seven weeks of flying across America with an...
Solar Impulse round-the-world plane heads for New York to finish its American flyover
The Solar Impulse 2 airplane is finishing...
Solar Impulse plane flies from Ohio to Pennsylvania, sets its sights on New York
One day after a close call, the Solar Impulse 2 round-the-world airplane made a 17-hour trip from Ohio to Pennsylvania...
Solar Impulse weathers ups and downs, then flies from Ohio to Pennsylvania
The team behind the Solar Impulse 2 airplane’s round-the-world odyssey knows all about reversals of fortune: One day after a disappointing...
After 17-hour flight, Solar Impulse plane lands in Ohio, home of the Wright Brothers
The Swiss-built...
From Oklahoma to Ohio: Fuel-free Solar Impulse plane crosses America’s heartland
The Swiss-built Solar Impulse 2 airplane continued its fuel-free, round-the-world odyssey early today with what’s expected to be an...
Round-the-world Solar Impulse plane dodges bad weather, lands in Oklahoma
After crossing the Himalayas and the Pacific, the fuel-free Solar Impulse 2 plane overcame the Rockies on Thursday during the Arizona-to-Oklahoma...
Round-the-world Solar Impulse plane takes 16-hour hop from California to Arizona
A solar-powered ultralight airplane called Solar Impulse 2 landed in Phoenix tonight after a nearly 16-hour flight from California’s Silicon...