How did Harlow establish the sun's position in the galaxy and the galaxy's size?
Q: Suppose that the outer stars of a galaxy have an orbital velocity of 150 km/s. If the radius of the…
A: Given data: rgalaxy=4 kpcv=150 km/s Need to determine the orbital period of the outer stars.
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: What is dark matter ?
A: A type of matter hypothesized to account for a large type of mass in the universe it's the dark…
Q: What would be the Hubble constant if the universe were 18 billion years old?
A: The age of universe is given as, t = 18 billion years (or) t = 18×109 years TO DETERMINE: The…
Q: What are cosmic rays primarily composed of?
A: Cosmic rays are energetic, subatomic particles that arrive from outside the Earth's atmosphere.
Q: Let us assume that our galaxy consists of 2.5 × 1011 stars each of one solar mass. How long will a…
A: Mass of the galaxy is
Q: If a standard passenger aircraft can fly at 0.27 km/s (604 mph), how long (in yr) would it take to…
A: The problem is based upon distance time relation. We know that distance is the length. For very…
Q: A given star orbits the center of its galaxy at an average speed of v_star, at a distance of r_star…
A: Given, Velocity of star,vS=200km/s=200×103m/sRadius of star,RS=9 kpc=9×3.086×1019mVelocity of…
Q: The number of stars in the Milky Way Galaxy is approximately
A: Number of stars in Milky way galaxy
Q: why do you have to know the distance to a galaxy to find its mass?
A: The orbital motion of stars explains the masses of galaxies. The stars in a heavier galaxy exhibit…
Q: How the universe expands?
A: The expansion of the universe is just the increase in distance between any two selected…
Q: If a galaxy has a redshift of 0.35 and the hydrogen line has a wavelength of 486.3 nm, what will be…
A: Redshift happens when the source of light moves away from the observer. The frequency observed will…
Q: What if the Andromeda galaxy were to disappear How long before we would notice?
A: About 2.5 million light-years separate our solar system from the Andromeda galaxy. If it vanished,…
Q: Which galaxies are moving the fastest away from us?
A: Our nearest galaxy is Milky way.
Q: Spiral Galaxy with 3 differences each and 2 similarities.
A:
Q: Among the globular clusters orbiting a distant galaxy, one is moving at 534 km/s and is located 14…
A: Given data: Speed of the globular clusters around the galaxy is, v= 534 km/s= 534000 m/s Distance of…
Q: If a very distant galaxy looks overall "blue" to astronomers, from this they can conclude that: O…
A: A region with many young stars appears blue in color. High-mass stars live fast and die young, using…
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: Why do you think the Andromeda galaxy has four times the stars as the Milky Way, yet is only…
A: One of the important attribute for the galaxies are that its Galactic halo which is an extended ,…
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: Put these in order from smallest to largest Universe Galaxy Solar system Distance between earth and…
A: Here we arrange these things on the bases of their size in increasing order.
Q: Why do theorists feel the universe is flat?
A: Why do theorists feel the universe is flat
Q: What does the redshift of the galaxies tell us about their motion with respect to the Earth?
A: The displacement of the spectrum of an astronomical object toward longer wavelength (red) due to the…
Q: How did the distance from fhe home dot to each galaxies change each time you inflated the balloon?
A: How did the distance from the home dot to each galaxies change each time you inflated the balloon?
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: What evidence shows that the universe is flat
A: Exact shape of the universe can not be predicted.
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: If the sun is 4.6 billion years old, how many times has it orbited the Milky Way? (The sun is 8,300…
A:
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: 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: le of our g
A: Given: To explain the sharpley determines the sun and galaxy size as,
Q: Compare the values of the number of grains of sand in all earth’s beaches with the number of stars…
A:
Q: The Andromeda Galaxy is 2 million light years away from the Milky Way. How far away is the…
A: A light year is the distance travelled by the light in a year
Q: A star at a distance of 50000 light years from the center of a galaxy has an orbital speed of 100…
A: Distance of the star from the center of the galaxy, r = 50000 ly The orbital speed of the star, v =…
Q: Based on comparison with the Moon, it can be calculated that Andromeda would have to have a diameter…
A:
Q: What is the magnitude of the merger of two galaxies which have the magnitudes m1 and m2?
A:
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: What is at the center of the Milky Way Galaxy?
A: Required: What is at the center of the Milky Way Galaxy?
Q: Was the Big Bang an explosion? Explain your answer.
A: the Big Bang wasn't an explosion that destroyed things.
How did Harlow establish the sun's position in the galaxy and the galaxy's size?
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