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In 2004 a blazar of 10 billion solar masses was discovered at a distance of 12.5 billion ly.  What was particularly intriguing about this discovery?

An orbiting disk of matter spiraling in towards a black hole is called what?

Cuban Missile Crisis U.S. and the Dominican Republic Kennedy and Vietnam Tonkin Gulf Incident and Resolution Arab-Israeli Six Day War  

Second Front Dumbarton Oaks Conference George Kennan and the Long Telegram Dean Acheson 1947 National Security Act

How are galaxies spread throughout the universe?

What can you never know about a black hole?

To answer the following question, you will probably need to use special characters (¿ ñ ¡) and/or accent marks (á é í ó ú). In order to indicate that a letter has a special character or an accent mark, you will have to put that letter in parenthesis.For example:If your answer is: ¿De dónde es el profesor de español? Él es de Panamá.You will need to type: (?)De d(o)nde es el profesor de espa(n)ol? (E)l es de Panam(a). To receive credit, you must answer the question using a complete sentence in Spanish and you must also indicate if there are any special character or accent marks in your answer.   Now, answer the following question using a complete sentence in Spanish: ¿Con qué frecuencia hace usted quehaceres domésticos?

In the expansion of the universe, the expansion takes place

What is the Local Group?

The distance from a black hole singularity to the point where nothing can escape a black hole (its event horizon) is called what?