Choose the statement that is NOT true of a galaxy. O Galaxies take different shapes depending on how the stars are distributed and oriented. O Agreat island of stars held together by gravity. All galaxies are basically of the same shape and consist mainly of a discs and a halos All the stars in a galary orbita common center
Q: An important part of the lifecycle of galaxies like the Milky Way is the self regulation of…
A: Required : The correct choice.
Q: Why do the spiral arms of our galaxy move around the center of the galaxy? a) Spiral arms do not…
A: Normal spirals have arms that emanate from the nucleus, while barred spirals have a bright linear…
Q: What are the three main types of galaxies, and what are the peculiarities? What type is the Milky…
A: There are three main types of galaxies. They are, spiral galaxies, elliptical galaxies, and…
Q: If a group of galaxies is revolving around its center at 240 miles/sec how fast is it moving in…
A: Let the galaxy's speed be denoted by v. The speed of the galaxies is 240 miles per second.
Q: In the image below you see two interacting galaxies; one is nearly face -on and the other is nearly…
A: The shape of the galaxies says the evidence of the tidal disruption.
Q: how might you be misled if you studied only the brightest galaxies in a cluster?
A: There are some of the observations which may mislead if you studied only the brightest galaxies in…
Q: Indicate whether the following statements are true or false. (Select T-True, F-False. If the…
A: T T T F T T
Q: The Virgo galaxy Cluster Much smaller than the Local Group. Contains 35 galaxies.…
A: the Virgo cluster forms the heart of the larger Virgo supercluster that comprises approximately…
Q: Spiral Galaxy with 3 differences each and 2 similarities.
A:
Q: If the active core of a galaxy contains a black hole of 106 Me, what will the orbital period be for…
A:
Q: classification helped Darwin understand how creatures evolve. How has classification helped you…
A: Our universe contains million number of stars. These stars continuously emit light radiation, heat…
Q: Explain why galaxies can have different shapes. please explain briefly and clearly
A: Reason why galaxies have different shapes : When we gaze up into the night sky, we can see stars…
Q: If an O-type star and our galaxy were at the same distance, which would have a greater magnitude? a)…
A: Given: The O-type star and our galaxy at same distance. The apparent magnitude decreases with the…
Q: why are the shells visible around some elliptical galaxies significant?
A: The shell structures in the elliptical galaxies indicates the extremely low surface brightness and…
Q: State three differences between the elliptic galaxy and the spiral galaxy.
A: Elliptic galaxy : the shape of elliptical galaxies are like a spheroid, or we say elongated sphere.…
Q: n this picture shown, the differences of light spectra of different galaxies compared to a…
A: Spectral lines occur due to the absorption of particlular wavelength of light which is…
Q: How many galaxies are there in the universe?
A: A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and…
Q: What are the types of galaxies?
A: Required : The types of galaxies.
Q: Under what circumstances would the slope of the best-fitted line in Figure decrease:
A: Required The correct choices.
Q: There exists an element visible in the spectrum of galaxies that shows the following spectra when…
A: Introduction: The Doppler effect refers to the apparent shift in the wavelength of a wave when there…
Q: Briefly discuss and compare the three general types of galaxies.
A: We need to discuss and compare the three general types of galaxies.
Q: Describe the age and temperature of stars that make up spiral galaxies and their location.
A: A galaxy can be bombarded by other, smaller galaxies. Even if a galaxy is isolated, internal…
Q: If a galaxy is 100,000,000 parces away and has absolute magnitude of -20.0 what is the galaxies…
A:
Q: 3 Billion Light-years 2 Billion 2 Billion Light-years Light-years 2.5 Billion 2.5 Billion…
A: Introduction: Hubble's law is the observation that galaxies are moving away from the Earth at speeds…
Q: How do galaxies form?
A: Two leading theories describe how the first galaxies were created. One says galaxies were born when…
Q: A star in the Milky Way that is about 60 percent of the way out from the center of the galaxy has an…
A: Answer: Detail solution in below.
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- Which of the following best describe the reasons we have to infer that a supermassive blackhole lurks in the centre of our galaxy? Stars keep disappearing from view as they get swallowed up in the galactic centre. Tight orbit of stars around an invisible companion & giant bubbles of cold, star forming gas have been expelled from galactic centre. We can measure the gravitational waves coming from such an enormous black hole. O Tight orbit of stars around an invisible companion & giant bubbles filled with gamma rays expelled from the galactic centre.Hubble's galaxy classification diagram (the "tuning fork") O suggests the existence of black holes O shows how galaxies evolve from one form to another O relates galaxies according to their shapes, but not according to any evolutionary status O explains active galactic nuclei EGOhow long do long-exposure photos of two selected areas of the sky reveal that galaxies are very common?
- In the reading, you were told that there were roughly 10,000 galaxies in the image of the Hubble Ultra Deep Field alone. The image is roughly 10 square arcminutes and there are roughly 1.5*10^8 square arcminutes composing the entire sky. With that in mind and assuming that the Hubble Ultra Deep Field represents an average part of the sky, roughly how many galaxies may exist in the observable universe? (Please include commas for every factor of 1,000; for example 2,343,567,890)Assume that a typical galaxy contains about 200 billion stars and that there are more than 150 billion galaxies in the known universe. Estimate the total number of stars in the universe.38. Many RR Lyrae stars are found in open clusters in the plane of the galaxy. True False
- An astronomer in an imaginary Universe observes a small patch of the sky (0.005% of the total) with very deep observations and finds one million galaxies. How many galaxies can they estimate to be present in the whole Universe? 10 billion 20 billion 50 billion O 70 billionThe Milky Way grew through merging with many smaller galaxies. What are the observational signatures of this process? O The motion of old stars in the bulge and halo of our galaxy are randomly orientated, meaning they were formed from collisions of small, accreted, galaxies all on different paths. O The ordered motion of the bulge / halo stars means that they came from many objects. The random motions of stars in the disk means it was formed from collisions of small, accreted, galaxies. O The motion of young stars in the disk are all in the same direction, meaning they came in as seperate objects.Distance Based on the graph above, the expansion rate of galaxies near us is than galaxies that are farther away. O faster slower O the same rate Velocity