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About Jesse Martinez
Expertise
General and specific questions about solar system and galactic astronomy, cosmology, are what I can easily answer off the top of my head. For example, what is the largest planet in the solar system? How far away is the moon? Have there been any confirmed planets in orbit around stars other than the sun? How many stars are there? The tougher ones like explaining the big bang theory and black holes I will leave to the PhD’s. Even though I could muster an answer, but would have to research it more than I would like. Would also like to answer questions that involve Astronomy with other sciences, chemistry, biology, physics, geology and mathematics as long as they are not PhD level.
Experience
I have been into astronomy since I was 8 years old. I have kept detailed journals of my observations through small telescopes. Over the years I have participated in amateur observation projects for organizations like ALPO. My personal research has involved "discovering" the moons of Jupiter with a 4½-inch Newtonian reflector. In a summer long project, I determined the existence of and plotted the orbits of the four major moons of Jupiter. From these observations, my data on orbital elements was surprisingly accurate (e.g. orbital radius and orbital period).
Education/Credentials
80 hours of college credits while studying physics and geophysics. Completed correspondence photography course while in high school. Took two semesters of electronics training at a community college. Studied computers and graduated from a technical school at the turn of the millennium, gaining A+ and Microsoft Certified Professional credentials.
Hablo Español. Si quieres preguntar en Español, estoy a su servicio.
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You are here: Experts > Science > Space and Astronomy for Kids > Astronomy > Quasars
Expert: Jesse Martinez - 10/24/2009
Question
Why do quasars find at the end of the Universe only?
Answer
Hello Ankur. Forgive the lateness of this answer. I hope it can still be of help. I believe the question you are asking is in reference to the fact that Quasars are very distant from the Earth. This is true.
Known Quasars are between 780 million and 28 billion light years away. This is because they are very old, the oldest known objects in the universe. This explains why they are found only "at the end of the Universe". What we see today is what they looked like when the universe was being formed. By now these objects have evolved into something else.
They were galaxy sized objects with the luminosity of 100 galaxies with a super massive black hole at its center.
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