The Perseus-pices supercluster of galaxies is 64 Mpc from Earth. How long (in years) does it take light from the supercluster to reach Earth?

Q: The Centaurus supercluster of galaxies is 52 Mpc from Earth. How long (in years) does it take light…

A: Given that The Centaurus supercluster of galaxies is 52 Mpc from Earth. then we have to determine…

Q: The bright radio galaxy, 3c84, is observed to be moving away from the Earth at such high speed that…

A: The formula for Relativistic Doppler effect in wavelength can be expressed as below, Here λ and λₒ…

Q: The expanding bubble of hot gas shown in the figure, which has been inflated by the light from a…

A:

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

A:

Q: The sun is about 8 kpc from the center of the galaxy. A kpc or kiloparsec is equal to   a. 10…

A: A kpc or kiloparsec is equal to the 1000 parcec Here,  In the option this value is not given

Q: An 800 nm spectral line when observed from a galaxy is shifted to 920 nm. Calculate the redshift.

A: Redshift is the process by which light from moving sources is shifted to longer wavelengths.…

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: At rest hydrogen has a spectral line at 149nm. If this line is observed at 144nm for the star…

A: Given:hydrogen spectral line at rest, λs = 149 nmobserved spectral line, λ = 144 nmAsked:What is the…

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: Galaxy will emit synchrotron radiation as a sun forms

A: The star forming region of a Spiral Galaxy will emit synchrotron radiation as a sun forms in the…

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

A:

Q: What is the recession speed of a galaxy cluster which is 50Mpc away from Earth? Is the light from…

A: Hubble Law It state that distant galaxies are moving away from our earth with a recession…

Q: Find the speed for a star in which this line appears at wavelength 122.5 nmnm.

A: Given wavelength = 122.5 nm Hydrogen transition wavelength = 121.6 nm Speed of light is c = 3×108…

Q: All Radio Galaxies have the following number of plasma jets and lobes a) 2  b) 5  c) 1  d) 4…

A: Radio galaxies have two plasma jets and lobes.

Q: A telescope on Earth is taking measurements of a nearby star six months apart. The telescope is…

A: Given: A telescope on Earth is taking measurements of a nearby star six months apart. The telescope…

Q: Let’s say you’re looking for extrasolar planets. You observe a star that has a spectral shift in the…

A: Write down the values using suitable variables. Here, c signifies the speed of light in a vacuum.

Q: What is the distance in parsec to pulsar 0628-28 using 400 and 600 MHz frequencies? The dispersion…

A: GIven for pulsar 0628-28, dispersion measure DM is 124.5We have to determine distance in parsec to…

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: Which star in the table below has the least surface temperature?   Star Name d (parsecs) Parallax…

A: Since, distance of the star in terms of Parallax is, d=1parallax (in arc-sec)parsecs Now from…

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 we knew that a distant galaxy were 8.56 x 1021 meters away from earth, what velocity could we…

A: The velocity of a distant galaxy can be calculated using Hubble's Law. Hubble's Law states that the…

Q: In which portion of the spectrum is the core of the galaxy invisible?   a. infrared   b. visible…

A: In gamma ray the core of the galaxy invisible

Q: Explain why galaxies can have different shapes.  please explain briefly and clearly

A: Reason why galaxies have different shapes : When we gaze up into the night sky, we can see stars…

Q: Which of the following statements about the different types (shapes) of galaxies are correct?…

A: The galaxies in the universe are generally classified into 3 major kinds based on their shapes. The…

Q: If Hubble’s constant had a value of 85 km/s/Mac, what would be the age of the universe?

A: Given: If Hubble’s constant had a value of 85 km/s/Mpc.

Q: Based on Figure 1 below, which galaxies are moving away from us the fastest? Velocity (km/sec) 2000…

A: first option is correct

Q: What triggers the nucleus of a galaxy into activity?   a. a nova explosion   b. a type I supernova…

A: (e) none of above

Q: The large black hole at the center of our galaxy is estimated to be a. 3.7 solar masses. b.…

A: Given : Asked to choose the correct option for the mass of the large black hole present at the…

Q: Can we measure distances to other galaxies using parallax?  Why or why not?

A:

Q: The longest wavelength of light humans can see is around 750 nm, deep red. If we were to observe a…

A: For light coming near a black hole, the light gets red shifted due to gravity.  The observed…

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: 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: Under what circumstances would the slope of the best-fitted line in Figure decrease:

A: Required The correct choices.

Q: The absolute magnitude of a star in the Andromeda galaxy (distance 690 kpc) is M = 5. It explodes as…

A:

Q: The orbits of population I stars   I.   are confined to disk of the galaxy.   II.  are very…

A: The stars are generally classified into two groups; Population I stars  Population II stars The…

Q: alaxy? Explain.

A: Given: To explain the how astronomers find the distance of the galaxy is given as,

Q: A nearby star, Proxima Centauri , has a parallax of 0.772  arcseconds. How long does it take the…

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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: What is the distance in light years (ly) to Alkaid? 12 ly 104 ly 55 ly 4 ly

A:

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.