The supermassive black holes at the centers of galaxies are the most massive objects in the universe. They range from about 1 million to upwards of 10 billion times the mass of the Sun. Some of these black holes also blast ...
Astronomy
Dec 15, 2020
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403
Around age six, we start learning how to tie our shoelaces, making knots that look like ribbons—or possibly more complex forms, if we are a little clumsy. We use knots every day, but the type of knots we generally use are ...
Optics & Photonics
Jun 10, 2019
1
37
The most ambitious drone-based investigation of severe thunderstorms to date will soon be launched by atmospheric scientists at the University of Nebraska-Lincoln and three partner institutions: Texas Tech University, the ...
Earth Sciences
Apr 4, 2019
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10
Most galaxies host supermassive black holes at their nuclei, each with millions or billions of solar-masses of material. There is thought to be a torus of dust and gas around the black holes, and an accreting disk that becomes ...
Astronomy
Jan 7, 2019
84
235
Are magnetic fields an important guiding force for gas accreting to a supermassive black hole (SMBH) like the one that our Milky Way galaxy hosts? The role of magnetic fields in gas accretion is little understood, and trying ...
Astronomy
Aug 17, 2018
253
297
The tokamak is an experimental chamber that holds a gas of energetic charged particles, plasma, for developing energy production from nuclear fusion. Most large tokamaks create the plasma with solenoids—large magnetic coils ...
Plasma Physics
Oct 27, 2016
0
11
Imène Goumiri, a Princeton University graduate student, has worked with physicists at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) to simulate a method for limiting instabilities that ...
Plasma Physics
Apr 15, 2016
7
23
(Phys.org) —ESO's Very Large Telescope Interferometer has gathered the most detailed observations ever of the dust around the huge black hole at the centre of an active galaxy. Rather than finding all of the dust in a doughnut-shaped ...
Astronomy
Jun 20, 2013
13
0
(Phys.org)—Pristine material that matches comets in our own Solar System have been found in a dust belt around the young star Beta Pictoris by ESA's Herschel space observatory.
Astronomy
Oct 4, 2012
0
0
Just as a terrestrial globe cannot be flattened without distorting the distances, it seemed impossible to visualize abstract mathematical objects called flat tori in ordinary three-dimensional space. However, a French team ...
Mathematics
Apr 26, 2012
1
0
