Researchers say galaxy may swarm with 'nomad planets'
(PhysOrg.com) -- Our galaxy may be awash in homeless planets, wandering through space instead of orbiting a star.
Astronomy
Feb 23, 2012
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News tagged with astrophysics
Physicists make strides in understanding quantum entanglement
While some theoretical physicists make predictions about astrophysics and the behavior of stars and galaxies, others work in the realm of the very small, which includes quantum physics. Such is the case at UC Santa Barbara, ...
Quantum Physics
Dec 14, 2012
30
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How we discovered the strange physics of jets from supermassive black holes
Supermassive black holes, which lurk at the heart of most galaxies, are often described as "beasts" or "monsters". But despite this, they are pretty much invisible. To show that they are there at all, astronomers typically ...
Astronomy
Mar 2, 2018
82
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IceCube Neutrino Observatory reports first evidence for extraterrestrial high-energy neutrinos
(Phys.org) —A massive telescope in the Antarctic ice reports the detection of 28 extremely high-energy neutrinos that might have their origin in cosmic sources. Two of these reached energies greater than 1 petaelectronvolt ...
General Physics
May 16, 2013
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3
Galaxies without stars: The problem of the missing hydrogen in the early Universe
(Phys.org)—Hydrogen is the most common element in the Universe, making up 75% of all normal matter and the content of stars. Although stars themselves are hot, they can only form out of the coldest gas when a massive cloud ...
Astronomy
Nov 9, 2012
57
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Slowly rotating neutron star paired with a red-giant star reveals properties that conflict with existing theory
Neutron stars are amongst the most exotic astrophysical objects in the Universe. Born from the supernova explosion of massive stars, neutron stars are so densely compacted by their own gravity that a sphere just 20 kilometers ...
Astronomy
Jun 20, 2014
3
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Record-breaking photo reveals a planet-sized object as cool as the Earth
(PhysOrg.com) -- The photo of a nearby star and its orbiting companion -- whose temperature is like a hot summer day in Arizona -- will be presented by Penn State Associate Professor of Astronomy and Astrophysics Kevin Luhman ...
Astronomy
Oct 19, 2011
9
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Black Holes: Peering Into the Heart of Darkness (w/ Video)
A new infrared image has captured the center of our galaxy in never-before-seen detail--showing stars and gas swirling into the super massive black hole that lurks at the heart of our own Milky Way.
Astronomy
Jul 19, 2010
8
0
Astrophysicists find that planetary harmonies around TRAPPIST-1 save it from destruction
When NASA announced its discovery of the TRAPPIST-1 system back in February it caused quite a stir, and with good reason. Three of its seven Earth-sized planets lay in the star's habitable zone, meaning they may harbour suitable ...
Astronomy
May 10, 2017
0
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Free-floating planets in the Milky Way outnumber stars by factors of thousands
A few hundred thousand billion free-floating life-bearing Earth-sized planets may exist in the space between stars in the Milky Way. So argues an international team of scientists led by Professor Chandra Wickramasinghe, Director ...
Astronomy
May 10, 2012
53
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