Evidence that much of the mass of the universe consist of dark energy has come from __________ a) measuring the density of matter in the solar system b) determining the distance to the Coma cluster c) determining the distance to quasars
Q: What evidence is there that quasars occur in distant galaxies? Explain.
A: To explain the correct answer is given below,
Q: The large look-back times of the farthest galaxies and quasars is about ______________ of the way…
A: The large look-back times of the farthest galaxies and quasars is about ______________ of the way…
Q: The cosmic microwave background consists of: huge clouds of dark matter interspersed with equally…
A: Cosmic microwave background also known relic radiation. Cosmic microwave background is kind of…
Q: If the cosmological microwave background was emitted by a plasma with a temperature temperature of…
A: The expression from the Wien's displacement law is λmT=k .......................................…
Q: Most of the helium of the universe was produced __________ a) In stars b) In quasars c) At the…
A: To find: Most of the helium of the universe was produced
Q: 21) If the Hubble's constant for a universe is 25 km/s/Mly. Calculate the distance to a galaxy that…
A: Edwin Hubble discovered through observation that the Universe is expanding. Galaxies are moving away…
Q: What was the temperature of the universe when the recombination took place that produced the cosmic…
A: Around 400,000 years after the big bang, the space was completely filled with a hot soup of…
Q: The objects that are detected at the points where the gas of a radio jet hits the extragalactic…
A: The quasar are small and the powerful source if energy that is active core of very distant galaxies.
Q: 21) If the Hubble's constant for a universe is 15 km/s/Mly. Calculate the distance to a galaxy that…
A: As per the observations made by Edwin Hubble, it was seen that the galaxies were moving away from…
Q: As the universe expands, which type of cosmic energy has a density that falls off most quickly? 1.…
A:
Q: Explain why Olbers’s paradox is not a paradox.
A: In the early history of astronomy, it was believed that the universe is static, infinite, uniform,…
Q: Describe some of the characteristics of the universe that are explained by the standard Big Bang…
A: Given, Big Bang theory of universe
Q: what are some fundamental properties of late type galaxies that our theories of galaxy formation…
A: All those galaxies which are included under Spiral and Irregular Galaxies are termed as Late Type…
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: b) The cosmic microwave background dates to a time when the universe was -380,000 years old, or to a…
A: Given: 380000 years ago Tr=3000 Kz=1100
Q: What started the clumping of matter in the early universe that eventually became the seeds of…
A: The force that is carried by the field of virtual astronomical particles in the quantum field is…
Q: A galaxy has a visible mass of 10 Mo and a flat rotation curve extending to 25 kpe at the level of…
A: Let MT denote the total mass of the galaxy. Let R and v denote the radius of the galaxy and velocity…
Q: Can you give me some samples of observation on big Bang theory experimen
A: The Big Bang theory is currently the one with the greatest evidence supporting it as the universe's…
Q: At what redshift will the Lya line (2o = 1215°A) be centered in the Johnson-Cousins U band? (Quasars…
A: From the redshift formula, we have 1+z=λobsλemitz=redshiftλobs=obserevd…
Q: The observable universe I. is the entire universe. II. is the part of the universe we can see.…
A: Answer d. II and IV
Q: Estimate the temperature of the universe when it was approximately 1 minutes old
A: Our universe is thought to be formed from a singularity of infinite density and temperature. It…
Q: Hubble law describes how the speed of recession of distant galaxies varies with the distance from…
A: Introduction: Hubble law: It is used for describing the age of the universe since the big bang. It…
Q: Which of the following is true of the cosmic microwave background radiation as we observe it today?…
A: Given:
Q: 7.) Explain what dark energy implies for the composition and age of the universe.
A: Dark energy is a hypothetical form of energy that is believed to exist in the universe and is…
Q: Explain why it only appears that we are at the center of expansion of the universe and why an…
A: Universe is expanding from everywhere and it has no center of expansion. Materials expand from a…
Q: wolume of a s
A: The average density of spherical galaxy is given as, ρ=M43πr23
Q: 3. What are heat engines? How do they work? 2. How is the second law expressed? Give examples. 4…
A: Sadi Carnot, the father of thermodynamics, was one of these scientists, publishing Reflections on…
Q: 6) The redshift of a galaxy is observed to be 1.5. Calculate the recessional velocity of the galaxy.
A: Redshift takes place when the source is moving away from the observer. This reduces the frequency…
Q: Calculate the critical density necessary for a closed universe for two extremes of the Hubble…
A: The critical density necessary for a closed universe for two extremes of the Hubble constant. given,…
Q: 3) A supernova of luminosity 1 billion solar luminosities is used as a standard candle to measure…
A: The luminosity of supernova is given as, LSn=1 billion solar luminosities=1×109LS, The distance…
Q: 46 Figure 44-12 is a hypothetical plot of the recessional speeds v of galaxies against their…
A:
Q: What evidence can you cite that the expansion of the universe is accelerating?
A: It is observed that galaxies are moving away from Earth at speeds proportional to their distance.…
Q: Explain how astronomers determined that the universe is expanding.
A: In universe there are millions of stars. These stars are always moving towards Earth or away from…
Q: 4) Calculate the redshift of a galaxy with a recessional velocity of 0.68c. (
A: When a celestial object is moving away from the observer the light observed from the object will…
Q: The presence of Dark Matter was theorized due to the curve of the data that the motion of the stars…
A: Answer:- Answer (1) :- (c) Laws of equal area . Because According to Kepler's second law A…
Q: We believe that the big bang occurred 13.8 billion years ago. Give 3 reasons why scientists believe…
A: There are several lines of evidence that support the idea that the universe is 13.8 billion years…
Q: Evidence that much of the mass of the universe consist of dark energy has come from __________ a)…
A: Option
Q: 3. The Androme da Galaxy hasa Muss of around 4x1042 kg and is 24k10" mauay What is you eScaße…
A: mass of galaxy = 4 * 1042 kg d = 2.4 *1 022 m Vescape = 2GM/d
Evidence that much of the mass of the universe consist of dark energy has come from __________
a) measuring the density of matter in the solar system
b) determining the distance to the Coma cluster
c) determining the distance to quasars
d) observing extremely distant supern
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