If a star orbits around the center of the Milky Way galaxy in a circle with radius of 19 kpc, how far does it have to travel (in kilometers) to complete one orbit? kilometers If the star orbits around the center of the Milky Way with an orbital speed of about 220 km/sec, how many years will it take to complete one orbit? years

Q: a) Calculate the period of the solar system's orbit around the Milky Way. Assume that we are 8.5 kpc…

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Q: Recall that Hubble’s Law is given by V=HR; this means that H has units of inverse seconds (1/sec).…

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Q: The New Horizons probe is currently traveling at 14.1 km/s. How long would it take to reach Proxima…

A: speed of probe (v) = 14.1 kms= 14100 msdistance (d) = 4 light years

Q: On Earth, the parallax angle measured for the star Procyon is 0.29 arcseconds. If you were to…

A: Write the relation in distance and parallax angle. d=1p

Q: Suppose we find an Earth-like planet around one of our nearest stellar neighbors, Alpha Centauri…

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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: 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: Roughly how many solar systems would it take to tile the disk of the Milky Way?

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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: random times over the last 1010 years. The rate of star formation is simply the number of stars…

A: Number of stars in our milky Way galaxy is  N=9×1010 Time taken in the formation of a plane

Q: The radius of the Earth's orbit is 1.50  1011 m and that of Mars is 2.28  1011 m. The star that this…

A: The radius of mars is, R=2.28×1011 m The mass of the sun is, M=1.989×1030 Kg The gravitational…

Q: In the parallax method of determining stellar distances, the angle to a star is measured while che…

A: Let's assume b=1AU And distance between sun and alpha centaurie is d. θ=2.1x10-4…

Q: An astronomical image shows two objects that have the same apparent magnitude, i.e., the same…

A: Let the luminosity of the star is Ls= LoLuminosity of  Milky Way galaxy, Lm=1011LoLuminosity of…

Q: Astronomy) (Part A) White Dwarf Size II. The white dwarf, Sirius B, contains 0.98 solar mass, and…

A: Mass of the dwarf planet = 0.98 solar mass                                          = 1.96 * 1033 gm…

Q: If the Sun is 4.6 billion years old, how many times has it orbited the Milky Way galaxy? (The Sun is…

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Q: The giant star Betelgeuse has an angular diameter as observed from Earth of about 0.05 arc seconds.…

A: Solution:-

Q: Use the circumference and speed to figure out how long the Sun takes to go once around the Galaxy…

A: Given, distance from the sun to the centre of the milky way galaxy, r = 8000 parsecs = 8000 pc So,…

Q: The density of Sirius B is 2×106 g/cm3 and its mass is 1.95×1030 kg. What is the radius of the white…

A: The given data are: ρ=2×106 g/cm3=2×109 kg/m3m=1.95×1030 kg Here, ρ and m represent the density and…

Q: Our galaxy is approximately 100,000 light years in diameter and 2,000 light years thick through the…

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Q: How often (in years) does a planetary system form in our galaxy?

A: Number of stars in our galaxy = 3 x 1011 stars time to consider = 1010 years rate of star formation…

Q: Suppose that stars were born at random times over the last 1010 years. The rate of star formation is…

A: Given that, The total number of stars in the Milky way is N=8×1011 And the stars were born at random…

Q: If the Sun's mass is about average, how many stars are there in the Milky Way galaxy? The mass of…

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Q: The closest star to Earth, after the Sun, is Proxima Centauri, which is just over 4 light years away…

A: We know that, the speed of light is 3 × 108 m/sec or         3 × 105 km/sec Given that, Proxima…

Q: A distant galaxy has an apparent magnitude of 13 and is 5,000 kpc away. What is its absolute…

A: Apparent Magnitude The apparent magnitude of a star or a galaxy is the measure of how bright the…

Q: Two stars are found to orbit each other once every 6.00 months. If the orbital radius (distance)…

A: According to Kepler’s third law, for a binary star system, we have the following relation between…

Q: White Dwarf Size II. The white dwarf, Sirius B, contains 0.98 solar mass, and its density is about 2…

A: It is given that, M=0.98 solar mass=0.98×1.989×1030 kg=1.95×1030 kgρ=2×106 g/cm3=2×106×103…

Q: The disk of the Milky Way galaxy contains roughly 200 billion (1 billion = 109 ) stars. The disk is…

A: The milky way galaxy consists of a disk of about 100000 ly diameter and a thickness of about 1000 ly…

Q: You are moving with the 70% of lights speed and it will take you 12.4 years to reach sirius. Your…

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Q: star is 1.0 x 104 ly (light-years) from the center of its galaxy and is moving in a circle around…

A: Given : r = 1 × 104 ly = (1 × 104)(9.46 × 1012) = 9.46 × 1016 km v = 110 km/s t = 5.6 x 109 years =…

Q: If the sun is 4.6 billion years old, how many times has it orbited the Milky Way? (The sun is 8,300…

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Q: You land on a strange spherical planet X. As a curious physicist, you set out to make the following…

A: Given, Flight time of an object on planet X is 8 seconds and circumference is 250,000 km

Q: Two stars, named A and B, each with a mass equal to the Sun's mass are in orbit around each other.…

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Q: 4 2.

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Q: The sun is the center of our solar system. Choose three details that go with the main idea. The…

A: A red giant star star may be a dying star within the last stages of stellar evolution. in just a…

Q: 1. Consider our Sun - it is in orbit around the center of our Milky Way Galaxy. The velocity of the…

A: The Sun orbits around the center of the milky way with an orbital velocity of 250 km/s.  Considering…

Q: Sun Planet X Moon

A: Given: The diameter of the sun=796000 mi Radius rs=7960002=398000 mi The diameter of Moon=2731 mi…

Q: If you find a galaxy that is the same size and mass as our Milky Way Galaxy, what orbital velocity…

A: Mass of our galaxy (M1): 4.0 X 1011 M Semi-major axis of the orbit (a): 51 kpc

Q: In 3–5 sentences, explain how the shape of planetary orbits affects their orbital velocity. Include…

A: In space every object moves in a fixed path  that is known as orbit .The  Shape of orbit is not…

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: 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: Using the center-of-mass equations or the Center of Mass Calculator (under Binary-Star Basics,…

A: Given: In this question, the given details are Consider the star 1 has m1=3.4 solar masses, and the…

Q: If a planet was located approximately 32 thousand light-years from the center of a galaxy and orbits…

A: The distance of planet is 32 thousand light years from center of galaxy and its time period is 313…

Q: A planet very similar to earth is found to be orbiting its star at a distance of 1800 million km…

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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: The figure below shows the radial velocity of a star plotted as a function of time over the course…

A: The radial velocity is a function of time, and also the radial velocity varies simple harmonically…