Indicate whether the following statements are true or false. (Select T-True, F-False. If the first is T and the rest F, enter TFFFFF).   A) The nearest large spiral Galaxy, similar in size to the Milky Way, is the Andromeda Galaxy (M31). It is located about 2 million light years from Earth. B) On very large scales, matter in the Universe is distributed in clumps and voids. C) RR Lyrae and Cepheid variable stars are used to measure the distance to nearby galaxies. D) Distances to most stars in the Milky Way are measured by parallax. E) If we find an O type star in our galaxy, it must be in the disk. F) The disk of the Milky Way galaxy is about 1,000,000 light years in diameter.

Q: On the second piece of graph paper, plot these 21 galaxies. Label the axis and units. Note that…

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Q: You have discovered a galaxies which is extremely red. Based on the redshift of this galaxy, you…

A: This problem is based on the Hubble’s law. According to this law, we have the following expression.…

Q: the

A: The galaxy with stars bulged at the center surrounded by a disc with arms is called a spiral galaxy.…

Q: What color is the center of this galaxy and why?

A: The supermassive black hole is the centre of the galaxy is located at inside the bright white patch…

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: The traditional theory of the formation of our galaxy CANNOT explain   a. the existence of the disk…

A: a. The existence of the disk of the galaxy

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: What are the challenges of determining the structure of the Milky Way? Dark matter absorbs light…

A: 1. Dark matter does not absorb, reflect or emit light.

Q: = 2. Using a Hubble constant of Ho 70 km/s/Mpc, find the distance to the galaxy cluster that moves…

A: Distance to the galaxy cluster is 92.8571 Mpc or 3.029×108light years. Explanation:Hubble's law…

Q: You observe a faint galaxy and find that a spectral line normally found in the visible part of the…

A: The wavelength at which we see absorption lines are unique in themselves. This was used by…

Q: We know that there are small particles (called dust) in the galaxy which dim the light coming from…

A: A galaxy is a large assembly of stars, gas, and dust, held together by gravity.

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: Find the equivalent of Kepler's three laws of motion if the gravita- tional force were to behave…

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Q: If the active core of a galaxy contains a black hole of 106 Me, what will the orbital period be for…

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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: Sombrero Galaxy is classified as a:     Sb     Sa     Irregular galaxy, we cannot see any spiral…

A: Sombrero galaxies are referred to spiral galaxy.

Q: Consider a universe in which the Hubble constant has been measured to have the value Ho = 50…

A: Given: The measured value of the Hubble constant is H0 = 50 km / s / Mpc

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: Advanced Physics Discuss briefly how i) the value of rotation parameters of the galaxy can be…

A: Advanced Physics Discuss briefly how i) the value of rotation parameters of the galaxy can be…

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: 6. If a spiral galaxy is 20' in diameter and you measure its distance to be 1 Mpc, what is its…

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Q: As we discussed, clouds are made of a great many small drops. Really - a great many. Imagine a…

A: As per Bartleby guideline, we will solve first three subparts.  Given that:Volume of cloud, Vcloud=1…

Q: Suppose you want to observe the molecular gas in a galaxy with redshift z using the rotational…

A: Suppose you want to observe the molecular gas in a galaxy with redshift z using the rotational…

Q: The surface brightness profiles of spiral galaxy disks follow the Sersic formula with n = 1. How…

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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.

Q: Which of the following best describe the reasons we have to infer that a supermassive blackhole…

A: Actually the blackhole is a  very higher density object . According to the general theory of…

Q: For the first two targets of the Event Horizon Telescope, astronomers selected Sag A* in the Milky…

A: In this question we have to answer why did astronomers choose the distant candidates. Please give…

Q: Does Hubble's Law work well for galaxies in the Local Group (such as Andromeda)?

A: Hubble law states that the velocity of the galaxies  which are moving away also known as the…

Q: 3. The Androme da Galaxy hasa Muss of around 4x1042 kg and is 24k10" mauay What is you eScaße…

A: mass of galaxy = 4 * 1042 kg d = 2.4 *1 022 m Vescape = 2GM/d

Q: Which of the following statements best describes our galaxy, the Milky Way? O A bulge dominated…

A: A galaxy is composed of stars, dust, gases, interstellar gas, stellar remnants, dark matter etc.…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.