Which of these astronomical objects is the largest? O a star O a spiral galaxy O a planet O a solar system

Q: Astronomical observations of our Milky Way galaxy indicate that it has a mass of about 8.0 • 1011…

A: Write the given values with suitable variables. M=8×1011 MS=8×10111.989×1030 kg=1.59×1042 kgr=6×104…

Q: Some thing that is 50 km away has an angular size of five arc seconds how tall is the object write…

A: Angular size, θ = 5 second of arc Distance, r = 50 km = 50×103 m Consider height is h.   First…

Q: If there are 3x10^7 seconds in one year, a distance of one light year is equal to: O 9 x 10^15 m O 9…

A: Given data:  Time (t) = 3 × 107 seconds Required: Distance of one light year

Q: Indicate whether the following statements are true or false. (Select T-True, F-False. If the first…

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Q: Stars which appear single to the naked eye but are double when seen through a telescope are: A.…

A: Stars which appear single to the naked eye but are double when seen through a telescope are called…

Q: An astronomical unit (AU) is defined as the average distance between the solar system and…

A: In the given problem we have to defined an astronomical unit AU.

Q: 5 terms listed below, You must include the term, a description of the term in your own words (to…

A: Everything that exist is universe. Given five terms can be described as below

Q: Astronomers have observed a small, massive object at the center of our Milky Way galaxy. A ring of…

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Q: The Messier Catalog is a. a listing of all the stars within the Local Bubble b. a list of all the…

A: The Messier catalog is a list of 110 commonly found objects in the night sky that can be easily…

Q: Galaxy B moves away from galaxy A at 0.5010.501 times the speed of light. Galaxy C moves away from…

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Q: Galaxy B moves away from galaxy A at 0.519 times the speed of light. Galaxy C moves away from galaxy…

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Q: You observe the H-alpha line of Hydrogen in a distant galaxy to have a wavelength of 754.4  nm. What…

A: The wavelength of the H-alpha line of Hydrogen in the distant galaxy is given as 754.4 nm. The rest…

Q: A certain triple-star system consists of two stars, each of mass m, revolving in the same circular…

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Q: Spectroscopy is used to help astronomers analyze and catalogue objects as they map the universe. One…

A: Spectroscopy is a branch of physical sciences which deals with study and observation of spectra…

Q: a huge system of stats that has hundreds of millions to hundred of billions of stars that id…

A: In space hundreds of millions of stars Steller objects, dust , gas etc combine together a huge…

Q: We are part of the galaxy. * Constellation

A: Earth is a part of milky way galaxy. Ans. Milky way galaxy.

Q: (II) Use Table 1–3 to estimate the total number of protons or neutrons in (a) a bacterium, (b) a DNA…

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Q: A star a distance of 1 parsec away has a parallax angle of 1 definition. by arcsecond arcminute…

A: A parsec is defined as the distance to a star which has a parallax angle of 1 arcsecond.

Q: star in the Andromeda galaxy is found to have a planet orbiting it at an average radius of…

A: Given radius(r)=3.38 x 1010 m Orbital period(T)=5.46 x 104 s

Q: Find the distance from the Sun to the center of the Milky Way.

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Q: Our Solar System is about 8.3 kpc from the centre of our galaxy. Using Newton's Universal…

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Q: Galaxy B moves away from galaxy A at 0.541 times the speed of light. Galaxy C moves away from galaxy…

A: We have to use special theory of relativity to solve this problem

Q: What are the types of galaxies?

A: Required :   The types of galaxies.

Q: Which of the below rotation curves best represents the orbital speeds stars in the Milky Way Galaxy…

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Q: Radio telescopes are an essential tool for modern astrophysics. They played a crucial role in…

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Q: A star that has a mass equal to the mass of our Sun is located 2.50×10^9 km from another star that…

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Q: Compare the values of the number of grains of sand in all earth’s beaches with the number of stars…

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Q: A scientist, using a telescope, sees arcs of light around a galaxy. In 3–5 sentences, explain the…

A: Answer:-    A scientist, using a telescope, sees arcs of light around a galaxy. The arcs of light…

Q: Galaxy B moves away from galaxy A at 0.501 times the speed of light. Galaxy C moves away from galaxy…

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Q: From the lists below, choose the one that best ranks the following astronomical objects from closest…

A: The distance of the Jupiter from the Earth,

Q: Which of the following is not correct regarding Cepheid variable stars.     They can be measure out…

A: Cepheid variables are not main sequence stars. Rather, they are stars that are in the helium burning…

Q: The famous debate where one person argued that faint objects were part of our system and the other…

A: The famous debate also called as the Shapley-Curtis debate.  This debate was held on 26th April…

Q: The solar system is 25,000 light years from the center of our Milky Way galaxy. One light year is…

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Q: Make a web search and explain in your own words a method to measure distances in universe.

A: There are different methods to measure distances in universe.

Q: Our sun was born approximately 4.6 billion years ago. How many journeys around the centre of our…

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Q: Using the data in the table below and the appropriate conversion factors, find the mean distance to…

A: From the given table, the mean distance to the Moon is,

Q: The Sun is located in   a. the center of the Milky Way Galaxy   b. the bulge of the Milky Way…

A: The Sun is an integral part of our universe. The sun is a at the centre. There are nine planets in…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.