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[10] 6 January A partial solar eclipse occurred. 8 January Researchers from the U.S. Department of Energy's Princeton Plasma Physics Laboratory (PPPL) report a new way to stabilise the "tearing modes" in fusion reactors, using radio waves to create small changes in the temperature of the plasma, allowing it to be controlled more easily. [11]
Popławski's approach is based on the Einstein–Cartan theory of gravity which extends general relativity to matter with intrinsic angular momentum ().Spin in curved spacetime requires that the affine connection cannot be constrained to zero and its antisymmetric part, the torsion tensor, must be a variable in Hamilton's principle of stationary action which gives the field equations.
2019: Chinese probe Chang'e 4 becomes the first human-made object to land on the far side of the Moon. [83] 2019: NASA concludes the 15-year Opportunity rover mission after being unable to wake the rover from hibernation. [84] 2019: The first image of the supermassive black hole inside galaxy Messier 87 was captured by the Event Horizon ...
Top 10 of Everything is an internationally distributed illustrated reference book of quantifiable Top 10 lists on a diverse variety of subjects, written by Russell Ash until his death in 2010, by Alexander and Caroline Ash from 2010-present, and Paul Terry (2014 'Top 10 for Boys') and published annually since 1989. Facts and statistics about ...
We finally—finally—made it to the end of the year. And though the music releases have gone from summer’s deluge to a steady trickle, that doesn’t mean there aren’t some great new songs ...
The latest State of the Climate report finds that 2010 to 2019 was the hottest decade on record globally, with an increase of 0.39 °C (0.7 °F) above the long-term average, and 2019 either the second or third warmest year on record. [142] [143]
A 2019 survey indicated a clear majority of people around the world think climate change is happening and that it is all or partly down to human actions. [15] However, 17% of Americans polled agreed that "the idea of manmade global warming is a hoax that was invented to deceive people", only Saudi Arabia and Indonesia having a higher proportion ...
Joker (2019 film) 259260 71 Oct 17 Elijah Cummings: 622483 68 Oct 18 Joker (2019 film) 239100 67 Oct 19 277950 70 Oct 20 Timothy Leary 308038 64 Oct 21 Joker (2019 film) 267922 67 Oct 22 2019 Canadian federal election: 517467 60 Oct 23 Joker (2019 film) 185629 69 Oct 24 183620 70 Oct 25 219254 69 Oct 26 257237 72 Oct 27 Abu Bakr al-Baghdadi ...