Why is it not possible to find out what's going on in our nearest star within the span of 24 hours?
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: Calculate the number of miles in a light-year, using 1.86 105 mi/s as the speed of light. (Hint:…
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Q: The expanding bubble of hot gas shown in the figure, which has been inflated by the light from a…
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Q: What is the distance in light years from Earth to a star that makes a parallax angle of 2.0 arc…
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Q: Calculate the number of miles in a light-year, using 1.86 105 mi/s as the speed of light. (Hint: The…
A: The light-year is the unit of length, and it is used to represent the astronomical distance.
Q: given: a (distance to center of galaxy in AU) = 1,717,914,439 AU P (suns orbital period in years)…
A: Given: a (distance to center of galaxy in AU) = 1,717,914,439 AU P (suns orbital period in years) =…
Q: What was the maximum age of the universe predicted by Hubble's first estimate of the Hubble…
A: Hubble's law is the observation in the cosmology regarding the motion of the galaxies away from the…
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: suppose there are three stars in space, each moving at 100 km/s. Star A is moving across9…
A: In this case, all the stars are moving away from the Earth. Therefore, we will observe the redshift.…
Q: an absolute magnitude of -3 is more luminous than an absolute magnitude of-8.
A: Given, Absolute magnitude of objects
Q: What is the distance in meters to our Sun that is 500 light-seconds away?
A: The time taken by the light to travel from Earth to Sun is t = 500 seconds. Assume the speed of the…
Q: How many parsecs are there in 212 light-years?
A: We know that 1 light year = 0.3066 parsecs
Q: Why do bigger stars burn out quicker(have a shorter lifespan
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Q: If the Sun is 4.6 billion years old, how many times has it orbited the Milky Way galaxy? (The Sun is…
A: Given: Sun is 4.6 billion years old Distance from the center of Milky way, r=8300 pc Speed of Sun…
Q: If a star 10 parsecs away from us was moved and appeared to be 4 times brighter after movement, how…
A: Given, d=10 parsecs
Q: Perhaps the most fundamental problem in all of astronomy is the determination of distance to the…
A: "The Hubble Law relates the recessional speed of distant objects (measured with the Doppler Effect)…
Q: Which celestial object contains more mass? O Star O Galaxy O Nebula O Comet
A: Now, using the Kepler's planetary laws, we can write: Mass of star = Around 0.08-150 solar masses…
Q: Is Hubble's law applicable in another planet or galaxy?
A: In this question we have to answer whether the Hubble's Law is applicable in another planet or…
Q: around them. в 3 10 15 20 25 Time (years) Time (years) C Time (years) Time (years)
A: Kepler’s Third law of planetary motion: According to Kepler’s third law of planetary motion, the…
Q: Which of these astronomical objects is the largest? O a star O a spiral galaxy O a planet O a solar…
A: The size of an astronomical object is as below in increasing order. Planet< Star< Solar…
Q: Can we find a unified theory of physics?
A: Unified Field Theory:- A unified field theory (UFT) in physics is a sort of field theory that…
Q: Consider that the absolute luminosity of the disk of the Milky Way, in the blue band, is L_B=…
A: Given The total luminosity of the galaxy = 2.3×1010 LB Sun The absolute magnitude…
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: If the Hubble's constant was 100 km/s/Mpc instead of 70 km/s/Mpc what would be the estimated age of…
A: It was observed that the galaxies were moving away from us. Edwin Hubble calculated their recession…
Q: how many Galaxy are there in all?
A: The huge collection of gas, dust, and billions of stars and their stars, which are held together by…
Q: The Tully-Fischer method relies on being able to relate the mass of a galaxy to its rotation…
A: Given: Distance of galactic center of Milky way r = 50 kpc r=50kpc3.086×1019m1kpc=154.3×1019m.…
Q: Another way of explaining a word is to enumerate the different parts of which it is made: “X…
A: The Solar system consists of our star, i.e. the Sun, and planets and heavenly bodies which are…
Q: Which of the below rotation curves best represents the orbital speeds stars in the Milky Way Galaxy…
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Q: A star is 80 light years from Earth. How fast does a spacecraft have to be for the journey to last…
A: The objective of the question is to find out the speed of a spacecraft that would allow an astronaut…
Q: why is it reasonable to suspect that travel between stars is nearly impossible?
A: Somethings are impossible because they violate fundamental laws of nature. Today, we belive that…
Q: A giant structure with billions of stars and sometimes gas and dust is called a O galaxy O star…
A: Galaxy
Q: Use excel calculator to fill in the missing calculations. 1pc = 3.26 ly Galaxy Andromeda Large Mag.…
A: We need to complete the table in Excel. 1pc = 3.26 lyAlso, 1 ly=9.461e+12 km
Q: What would be your estimate for the age of the universe if you measured Hubbleʹs constant to be 33…
A: We are given the value of Hubble constant. We are to find the age of universe. We are also given the…
Q: One of our closest stars is our Sun, duh. If the distance from Earth to our Sun is 1.56e-05…
A: Solution: The speed of the star is obtained by the Hubble relation, v=H0d…
Q: Most of the dark matter in a galaxy is located in a galaxy's (hint: one word) which allows the…
A: It is a fill in the blank.
Q: If a neutron star has a radius of 15 km and rotates 748 times a second, what is the speed of the…
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Q: A less massive star will usually live longer than a more massive star O True O False
A: In star hydrogen is the fuel
Q: Which of these astronomical objects is the largest? O a star O a spiral galaxy O a planet O a solar…
A: A olar system is collection of stars , plnets asteroids etc.and is therfore bigger than star and…
Q: If a neutron star has a radius of 12 km and rotates 1,352 times a second, what is the speed at which…
A: radius of neutron star (r) = 12 km = 12000 m angular speed (ω) = 1352 revolutions per second
Q: 9. An alien observer is located in the disk of a spiral galaxy at a distance of Ro = 10 kpc from the…
A: From the given equation, vr=ΩR-ΩR0R0sinlvr=ΘR-ΘR0R0sinl…
Q: To what extent do astronomers have the ability to see into the history of the universe?
A: Introduction: We are all aware that time travel is not feasible, so an astronomer cannot use A time…
Q: A star is 80 light years from Earth. How fast does a spacecraft have to be for the journey to last…
A: The objective of this question is to find out the speed of a spacecraft that would allow an…
- Einstein's special relativity explains how speed affects mass, time, and space. As per special relativity, mass can be converted into energy and energy into mass. This relationship is defined using the speed of light.
- When an object reaches the speed of light its mass becomes infinite along with the energy. This implies nothing can move faster than light and the speed of light is considered a cosmic speed limit.
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