How many light years are in one parsec? (Use at least two significant figures)

Q: What is the distance in parsecs to Vega, which has an annual parallax of 0.129 arcsec.

A: Annual parallax (p), p=0.129 arcsec

Q: You are in a car 54.9 meters away from a street sign (distance from your face to the sign). The text…

A:

Q: Which unit of measurement is larger?

A: 1 rad = 57.3 degree. So for 1 rad we required 57.3 degree.  So 1 degree = (1/57.3) < 1 rad

Q: A light-year is defined as the distance traveled by light in a vacuum during one tropical year. How…

A: Given data: A light-year is defined as the distance traveled by light in a vacuum during one…

Q: How many miles in a light year?

A: Light year is the distance travelled by light in one year.  We know speed of light is equal to 3x108…

Q: Calculate the magnitude of proper motion using ascension of 16.851 and declination-10.756 mas/yr

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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: An astronomer makes precise measurements of a star with respect to the background celestrial sphere.…

A: Given, The star changes its position from January 1 to July 1 by a total of 1.9 arc seconds. Its the…

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: At what distance is an object if its parallax, as measured from either end of a 1000-km baseline, is…

A: The given data we have: Baseline: 1000km The parallax is to be measured at angles θ=1o,1',1''

Q: Suppose the Sun were somehow replaced by a star with five times as much mass. How long would the…

A: Earth year is the amount of time that the earth takes to complete 1 revolution in its orbit about…

Q: Convert 3,000 grades/century to Mega Hertz (MHz)

A: to convert : 3000 gradescentury to Mega Hertz

Q: As we discussed, the radius of the Earth is approximately 6370 km. The Sun, on the other hand, is…

A: Given:  Radius of Earth = 6370 km Radius of Sun  = 700,000 km Distance between earth and sun =…

Q: Explain Parallax

A: There is an apparent shift in position of the object due to the change in point of observation .This…

Q: Why do clocks go clockwise?

A: Sundial is the first ever clock made in the universe, which is the predecessor of any clock. All the…

Q: An arcminute is what fraction of a degree?

A: we know 1 degree =60 arcminutes=60x60 arc seconds

Q: The difference in absolute magnitude between two objects at the same distance is related to their…

A: "Since you have asked multiple question, as per our guidelines we will solve the first question for…

Q: 3. Use the chart given to answer the following Height above earth ) tquatorial Radius (m) orbital…

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Q: One of the closest stars to the sun has a parallax of 0.5 arcseconds. What is the distance to this…

A: Closest star to the sun has: Parallex=0.5 arcsecond We define distance 'd' to a star is reciprocal…

Q: For an observer found at a latitude of 35 degrees North, what is the minimum declination for a star…

A: Determine the MCP value of the star. So, the declination angle will be from 55 degrees to 90…

Q: How many parsecs are there in 212 light-years?

A: We know that 1 light year = 0.3066 parsecs

Q: What is the difference in magnitude for two stars is one appears four times brighter than the other?

A: one star  appears four times brighter than the other  It means the intensity of the total…

Q: Which unit of length would most likely be used to measure the distance from Earth to stars other…

A: Answer            d) Astronomical unit

Q: What are the names of the following three well-known constellations?

A: (5) is Cassiopeia Cassiopeia, in Greek mythology, was a vain queen who often boasted about her…

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: As we discuss in class, the radius of the Earth is approximately 6370 km. The radius of the Sun, on…

A: The radius of the earth Re = 6370 kmThe diameter of the earth de= 2Re = 12740 kmThe radius of the…

Q: how many miles in 6.5 light years

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Q: You travel to another star system and meet some aliens. They say there are 146 constellations in the…

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Q: The star Sirius has an apparent magnitude of -1.46 and appears 95-times brighter compared to the…

A: Part a: Magnitude in astronomy is defined as an index for the brightness of a star and is denoted by…

Q: Is the ecliptic the same thing as the celestial equator? Explain

A: The celestial equator is the intersection of the Earths equatorial plane with the celestial sphere,…

Q: How fast is a light year?

A: Light year is a unit of distance and not of speed or time, and it is equal to the distance traveled…

Q: How many kilometers are there in 5 parsecs?

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Q: How far away is the star Spica, whose parallax is 0.0130?

A: When an observer's point of view changes the displacement observed for an object is called as…

Q: What is the parallax of a star that is 150 pc from Earth?

A: The parallax is given by

Q: How would i calculate 9.3x107miles to the sun. How would you write this distance as a standard…

A: We need to find the distance from the earth to sun in metres because that is the SI unit of…

Q: If we view a star now, and then view it again 6 months later, our position will have changed by the…

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Q: You measure a star to have a parallax angle of 0.12 arc-seconds What is the distance to this star in…

A: Write the given values of the problem- Parallax angle=0.12 arc-second

Q: Calculate the number of miles in a light-year, using 1.86 105 mi/s as the speed of light. (Hint:…

A: Given data: The speed of light c = 1.86 × 105 miles/s No. of days in a year = 365 days

Q: What is  1-5/6 Please tell me

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Q: )The apparent brightness of the Earth is inversely proportional to the square of the distance…

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Q: 4. From Earth, the angular size of the Moon is 0.5°. The distance between the Earth and the Moon is…

A: The small-angle approximation for the case as shown in figure is given as-θ=LR

Q: The ratio of circumference to diameter for measured circles on a disk equals

A:

Q: A star has an angle of inclination of 24.3471 degrees and an observer's latitude of 52.4777 degrees,…

A: Angle of inclination of 24.3471 degrees  Observer latitude 52.4777 degrees

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.