Suppose a galaxy is moving away from Earth at a speed of 0.78c. It emits radio waves of 0.680 m. What wavelength would we detect on Earth? with a wavelength
Q: A Type la supernova explodes in a galaxy at a distance of 6.10×107 light-years from Earth. If…
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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: 1.0 0.8 0.6 Cosmic background data from COBE 0.4 0.2 0.0l 0.5 10 Wavelength A in mm c) The left hand…
A: from the graph, the maximum intensity of radiation is at λ=1 mm. From Wein's law, we have…
Q: The moon is 1.3 light-seconds away. Imagine you are standing at the Canadian Space Agency…
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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: Redshift: A distant quasars has a redshift of z = 4.5. This means that the wavelength of spectral…
A: Given wavelength (λ) = 410 nm ∆λ = (2255 - 410)nm =1845 nm
Q: If a galaxy is 9.0 Mpc away from Earth and recedes at 488 km/s, what is H0 (in km/s/Mpc)? km/s/Mpc…
A: The question above has been given from Hubble's law. This law is also known as the Hubble-Lemaitre…
Q: Find the speed for a star in which this line appears at wavelength 121.8 nmnm. Express your answer…
A: Given that-- (lemda)star = 121.8 nm (lemda) = 121.6 nm Speed of light (c) = 3 × 108 m/s Question?…
Q: Astronomers compared the spectra from two different stars in our galaxy. It was noted that the…
A: The velocity of the stars is determined by using the doppler effect. The Doppler effect depends on…
Q: Suppose a galaxy is moving away from Earth at a speed 0.78c. It emits radio waves with a wavelength…
A: Doppler effect is the change in frequency and wavelength of a wave due to the motion of the source…
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: Edwin Hubble established the existence of separate, distant galaxies when he found __________ stars…
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Q: The frequency of light emitted from hydrogen present in the Andromeda galaxy has been found to be…
A: According to the Doppler effect due to relative motion between the source and the observer,…
Q: The wavelength of a photon has been redshifted from 495 nm to 505 nm. What is the Redshift of the…
A: As the wavelength increases, we say a redshift occurs. λ1=505 nmλ0 = 495 nm Relativistic Doppler…
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: What observation in astronomy, made AFTER the discovery of quasars, was a big help to astronomers in…
A: A quasar is an enormous object same like star. It also shines very brightly. It sends out radio…
Q: A 2 GHz radio signal is detected from a galaxy as 0.86GHz. Estimate the relative velocity.
A: Like all waves light waves also get Doppler shifted. In the case of light waves, the Doppler shift…
Q: Sirius is about 9.0 light-years from Earth. a) To reach the star by spaceship in 12 years (ship…
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Q: As measured on Earth the star Fomalhaut is 25.1 light years away. As measured by the crew of a…
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Q: A Type la supernova explodes in a galaxy at a distance of 8.70 x 10' light-years from Earth. If…
A: Given value--- Hubble constant = 68.1 km/s/Mpc . distance of galaxy from Earth = 8.70 × 107 light…
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: Calculate, how fast you were going in meters per second when you ran the red light because it…
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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: A galaxy is observed to be at 10.0 Mpc from Earth. If it is receding at 520 km/s, calculate the…
A: Edwin Hubble in his observations found that the galaxies were moving away from us instead of getting…
Q: What would the wavelength of the 21 cm line be for a source moving away from the Earth at 10% the…
A: As per the Doppler effect, the observed wavelength can be found as, Here, λO, λS, v, and c…
Q: 2. A starship traveling toward you at a speed of 0.5c shines a green light of 500 nm at you.…
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Q: 2. Sirius is about 9.00 ly from Earth. To reach the star by spaceship in 10.5 y с 50 ssf60 $09J$$…
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Q: Which of the following is an accurate statement about quasars?
A: ANS: They are abnormally massive, luminous stars at the cores of ancient galaxies.
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
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- Sirius is about 9.00 ly from Earth. To reach the star by spaceship in 15.0 y (ship time), how fast must you travel?We receive today the light from a distant galaxy and from its spectrum we conclude that it took 400 Myr for the photons to reach us. Which one of the following statements is correct? O The Universe is accelerating, so that galaxy is moving toward us at higher speed and it will take less than 400 Myr for future photons from that galaxy to reach us. O That galaxy is 400 million light years away from us today. O That galaxy is moving away from us, so today it is more distant from us than 400 million light years. O We are observing that galaxy as it was in the past, and today it is accelerating toward us.One of our closest stars is our Sun, duh. If the distance from Earth to our Sun is 1.56e-05 light-years, how quickly is that star travelling away from us? [Note that Hubble's Constant is roughly 70 km/s/Mpc and 1 light-year is roughly 3.07E-7 Mpc.] m/s
- Two starships, the Enterprise and the Constitution,are approaching each other head-on from a great distance. The separation between them is decreasing at a rate of 792.5 km/s . The Enterprise sends a laser signal toward the Constitution.When astronomers observe far away galaxies they see the light being redshifted (i.e. the frequency of the observed light waves is lower – more towards the red – than expected). That is an indication that far away galaxies are moving away from us. not moving. moving towards us.Are the galaxies red-shifting or blue-shifting? Explain. (You may find the big-bang theory helpful). Andromeda galaxy is currently approaching our galaxy with a radial velocity of 266 km/sec. How far is our galaxy from Andromeda? (Hubble’s constant, H, is 73 km/sec/MParsec). When can the two galaxies be anticipated to collide?
- Imagine our solar system is moving in the Milky Way toward a group of three stars. Star A is a blue star that is slightly closer to us than the other two. Star B is a red star that is farthest away from us. Star C is a yellow star that is halfway between Stars A and B. Which of these three stars, if any, will give off light that appears to be redshifted? А. А В. В O C. C D. All three stars will appear to be redshifted. E. None of these stars will appear to be redshifted.helpInfrared radiation from the center of our galaxy with a wavelength of about 2 μm (2 × 10-6 m) comes mainly from cool stars. Use this wavelength as Amax and find the temperature of the stars.
- 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?The red-shift of a galaxy observed by us corresponds to a speed of 50000 km/s. How far is the galaxy from us approximately? A. 700 Mpc B. 70 Mpc C. 7 Mpc D. 7 Gpc Is the answer A? Thank you!Suppose an alien race on a distant planet tries to send a message to us, with a laser (light). However, we were unaware that there is a stellar-mass black hole almost directly between us and them. How would this complicate our attempts to locate their position in the Galaxy? O Gravitational lensing would make the signal appear to be coming from a different location O The information carried by the laser (light) would be altered O It would not matter The black hole absorbs all of the light