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A null route or black hole route is a network route ( routing table entry) that goes nowhere. Matching packets are dropped (ignored) rather than forwarded, acting as a kind of very limited firewall. The act of using null routes is often called blackhole filtering. The rest of this article deals with null routing in the Internet Protocol (IP).
Celestia is a real-time 3D astronomy software program that was created in 2001 by Chris Laurel. The program allows users to virtually travel through the universe and explore celestial objects that have been catalogued. Celestia also doubles as a planetarium, but the user is not restricted to the Earth's surface, like in other planetarium ...
A black hole with the mass of a car would have a diameter of about 10 −24 m and take a nanosecond to evaporate, during which time it would briefly have a luminosity of more than 200 times that of the Sun. Lower-mass black holes are expected to evaporate even faster; for example, a black hole of mass 1 TeV/c 2 would take less than 10 −88 ...
Role. To deal with this problem, the Internet Assigned Numbers Authority (IANA) has set up three special DNS servers called "blackhole servers". Currently the blackhole servers are: [ 3] blackhole-1.iana.org ( 192.175.48.6) blackhole-2.iana.org ( 192.175.48.42) prisoner.iana.org ( 192.175.48.1) These servers are registered in the DNS directory ...
An accretion disk is a structure (often a circumstellar disk) formed by diffuse material [ a] in orbital motion around a massive central body. The central body is most frequently a star. Friction, uneven irradiance, magnetohydrodynamic effects, and other forces induce instabilities causing orbiting material in the disk to spiral inward toward ...
The Black Hole Memorial, St. John's Church, Calcutta, India. In memoriam of the dead, the British erected a 15-metre (50') high obelisk; it now is in the graveyard of (Anglican) St. John's Church, Calcutta. Holwell had erected a tablet on the site of the 'Black Hole' to commemorate the victims but, at some point (the precise date is uncertain ...
Black hole information paradox. The first image (silhouette or shadow) of a black hole, taken of the supermassive black hole in M87 with the Event Horizon Telescope, released in April 2019. The black hole information paradox[ 1] is a paradox that appears when the predictions of quantum mechanics and general relativity are combined.
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