7.) Explain what dark energy implies for the composition and age of the universe.
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: About how much of the universe is believed to be composed of dark energy? O 68-73% O 10-12% O 4-5% O…
A: We know very less about the universe . and said universe is expand . the maximum thing is unknown…
Q: If there is no observable edge to the universe, can we determine where its center of expansion is?…
A: Let’s explain by taking a simple example of a balloon analogy to explain the expansion of the…
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: Describe the Observable Universe carefully and in details.
A: The observable universe is a ball-shaped region of the universe that contains all matter that can be…
Q: Which of the following events in the early universe likely came first? a. Formation of the…
A: Answer: (b) Big Bang Nucleosynthesis
Q: 15) Calculate the gravitational redshift caused by Sun on the photons coming from its surface.
A: As per general relativity when light moves away from a gravitational source its wavelength will…
Q: 27) Calculate the time it would take for 5 solar mass black to radiate its energy.
A: When stars with mass greater than 3 or 4 solar mass die the gravitational collapse is so large that…
Q: In the context of the Big Bang theory, cosmic inflation refers to: A. A rapid expansion of the…
A: The big bang is the focal point of the most convincing theory explaining the origin of our…
Q: Define the term 'The Nature of Dark Matter' this term is from physics and how does it work.
A: The term 'The Nature of Dark Matter' refers to the characteristics and properties of a hypothetical…
Q: Describe the distribution of globular clusters within the galaxy, and explain what that implies…
A: The distribution of globular clusters within the galaxy, and explain what that implies about the…
Q: What was the age of the Universe when the redshift was 3,000? Assume the Cosmological Constant is…
A: Given the redshift z = 3000. Take Hubble's constant…
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: 25) Recall that Hubble’s Law is given by V=HR; this means that H has units of inverse seconds…
A: A parsec is 3.26 light-years and the speed of light is 3 X 105 km/sec. Use 3.156 X 107 sec/yr.
Q: About what percentage of the universe is believed to be composed of normal matter? O 5% O > 22% O…
A: 68% of the matter is dark energy. 27% of the matter is dark matter. Rest less or equal to 5% is…
Q: What exactly is dark matter?
A: Particles that do not absorb, reflect, or emit light, hence cannot be detected by electromagnetic…
Q: 3. Consider the following two universes: Universe I: flat, matter-dominated with no cosmological…
A:
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: 28) How accretion disk surrounding the black hole helps in its detection?
A: Black holes are generated when supermassive stars die. The gravitational collapse is so large that…
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: The flatness problems states that a. the density of the universe is very close to the critical…
A: The flatness problem is a fine tuning problem of cosmology in the Big-Bang theory. Here, density of…
Q: 1- can we obtain energy from a Votating black hole ?
A: Einstein's theory of general relativity , the theory that connects space, time, and gravity predicts…
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: The Analysis of the Big Bang Theory.
A: Universe is the whole yonder which consists of many many miles of life both living and unliving. Its…
Q: What is “dark energy”? What is “dark matter”? Why do some scientists think it is everywhere, while…
A: We live in a universe where a lot of space seems to have nothing but a vacuum. A majority portion of…
Q: 26) To what size the Sun should shrink to become a black hole?pok
A: Schwarzschild radius is the limit to which a body can shrink before undergoing irreversible…
Q: Summarize The Big Bang Theory and its evidence
A: Humans have been always keen on knowing how the universe came into existence. For this, they…
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: 1. Fusion of two Deuterium isotopes to form Helium3 2. Fusion of Deuterium anda neutron to form…
A: 1.Fusion of two Deuterium isotopes are : Fusion of two Deuterium to form Helium 3.H12+H12→H24e high…
Q: 7) The H-alpha line from a star is observed to be 850 nm. Estimate its redshift
A:
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: 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: Explain Birth of the earth in light of Big Bang Q.3. theory.
A: The Big Bang theory explains the origin of the universe.But not the origin of earth. We know that…
Q: Which of the following represents the notion that our observable Universe may be a part of a much…
A: To find which represent the notion that our observable universe may be part of much larger whole?
Q: What is dark matter? (200 words)
A: Answer:Dark matter is a form of matter accounting 85% of the matter in the universe and about 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: Explain why does scientists believed that the big bang theory is an expansion not an explosion
A:
Q: Make a web search and explain in your own words a method to measure distances in universe.
A: There are different methods to measure distances in universe.
Q: 7) How does Cosmic Microwave Background Radiation help support Hubble's inference of Cosmic…
A: Answer: As per the given statement,
7.) Explain what dark energy implies for the composition and age of the universe.
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