Are Supermassive Black Holes Really at the Center of Galaxies?

AI Thread Summary
Supermassive black holes are generally accepted to exist at the centers of large galaxies, although not all galaxies have been observed. The concept of inflation refers to the rapid expansion of the universe after the Big Bang, and it is considered true. The ecliptic is often misunderstood; it is not directly above the Earth's equator but rather relates to the plane of Earth's orbit around the Sun. Clarifications on these topics can enhance understanding for astronomy studies. Accurate comprehension of these concepts is crucial for success in astronomy courses.
University
Messages
31
Reaction score
0
Hello all,
I am studying for an Introductory Astronomy final and I came across an old exam with a few True and False Questions


Supermassive black holes are found in the centres of large galaxies (Supermassive is tricky here, not sure on this)

Inflation is the name we give to the rapid expansion of the universe shortly after the Big Bang

(Inflation??I think False)

The ecliptic is the imaginary line in the sky that is always directly above the Earth's equator

(False, northern hemisphere yes but what about southern?)

Any help is welcome
 
Astronomy news on Phys.org
University said:
Supermassive black holes are found in the centres of large galaxies
True (well probably, we haven't looked at all galaxies)

(Supermassive is tricky here, not sure on this)
Depends on your ego I suppose but a couple of million solar masses is pretty super as far as I'm concerned.

Inflation is the name we give to the rapid expansion of the universe shortly after the Big Bang (Inflation??I think False)
Think again

The ecliptic is the imaginary line in the sky that is always directly above the Earth's equator (False, northern hemisphere yes but what about southern?)
I think you are misunderstanding the nature of an equator!
 
What do your lecture notes say about these things?
 
TL;DR Summary: In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect alien signals, it will further expand the radius of the so-called silence (or rather, radio silence) of the Universe. Is there any sense in this or is blissful ignorance better? In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect...
Thread 'Could gamma-ray bursts have an intragalactic origin?'
This is indirectly evidenced by a map of the distribution of gamma-ray bursts in the night sky, made in the form of an elongated globe. And also the weakening of gamma radiation by the disk and the center of the Milky Way, which leads to anisotropy in the possibilities of observing gamma-ray bursts. My line of reasoning is as follows: 1. Gamma radiation should be absorbed to some extent by dust and other components of the interstellar medium. As a result, with an extragalactic origin, fewer...
This thread is dedicated to the beauty and awesomeness of our Universe. If you feel like it, please share video clips and photos (or nice animations) of space and objects in space in this thread. Your posts, clips and photos may by all means include scientific information; that does not make it less beautiful to me (n.b. the posts must of course comply with the PF guidelines, i.e. regarding science, only mainstream science is allowed, fringe/pseudoscience is not allowed). n.b. I start this...
Back
Top