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1 day ago · A Chandra X-Ray Observatory image of Cygnus X-1, which was the first strong black hole candidate discovered. X-ray binaries are binary star systems that emit a majority of their radiation in the X-ray part of the spectrum. These X-ray emissions are generally thought to result when one of the stars (compact object) accretes matter from another ...
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The supermassive black hole inside the core of the...
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Black hole is a former featured article.Please see the links...
- List of Black Holes
1ES 2344+514; Ton 618 (this quasar has possibly the biggest...
- Spacetime
In physics, spacetime is a mathematical model that fuses the...
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We would like to show you a description here but the site...
- Event Horizon
The reachable Universe as a function of time and distance,...
- Black Body
A black body radiator used in CARLO laboratory in Poland. It...
- Messier 87
Messier 87 (also known as Virgo A or NGC 4486, generally...
- Cygnus X-1
Cygnus X-1 (abbreviated Cyg X-1) is a galactic X-ray source...
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2 days ago · General relativity, also known as the general theory of relativity and Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics. General relativity generalizes special relativity and refines Newton's law of universal gravitation ...
18 hours ago · The Sun is a G-type main-sequence star that makes up about 99.86% of the mass of the Solar System. It has an absolute magnitude of +4.83, estimated to be brighter than about 85% of the stars in the Milky Way, most of which are red dwarfs. [32] [33] The Sun is a Population I, or heavy-element-rich, [b] star. [34]
2 days ago · The Strategic Defense Initiative ( SDI ), derisively nicknamed the Star Wars program, was a proposed missile defense system intended to protect the United States from attack by ballistic nuclear missiles. The concept was announced in 1983, by President Ronald Reagan, [1] a critic of the doctrine of mutually assured destruction (MAD), which he ...
4 days ago · 7. When positioned correctly, optic foramen should be projected in lower, outer quadrant of orbit examined. Rhese Suggestions. -If optic foramen is in rim of orbit, patient is positioned too lateral. -If optic foramen is in middle of orbit, patient is positioned to P.A. Find the best radiology school and career information at www.RTstudents.com.
18 hours ago · Latest release. Halo Infinite. December 8, 2021. Halo is a military science fiction media franchise, originally developed and created by Bungie and currently managed and developed by 343 Industries, part of Microsoft 's Xbox Game Studios. The series launched in 2001 with the first-person shooter video game Halo: Combat Evolved and its tie-in ...
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Are X-ray binaries accretion disks?
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3 days ago · Apollo 8 (December 21–27, 1968) was the first crewed spacecraft to leave Earth's gravitational sphere of influence, and the first human spaceflight to reach the Moon. The crew orbited the Moon ten times without landing, and then departed safely back to Earth. [1] [2] [3] These three astronauts — Frank Borman, James Lovell, and William ...
