Measured ages of globular clusters and a study of the time required for massive stars to build up the present abundance of heavy elements suggests that the universe is
Q: Of the following objects, the one that produces the least energy is a a. supernova. b. Type 1…
A: Answer:- Option (a) correct. Supernova.
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: black hole.
A: A quasar is an extremely bright Active Galactic Nucleus also known as AGN. The Quasars radiates a…
Q: An important part of the lifecycle of galaxies like the Milky Way is the self regulation of…
A: Required : The correct choice.
Q: he age of the universe can be determined if a. the universe is flat. b. the amount of dark…
A:
Q: bsorption lines produced by interstellar gas a. are wider than the lines from stars because the…
A: Introduction: The gas between stars is mostly hydrogen and helium scattered at varying densities…
Q: The traditional theory of the formation of our galaxy CANNOT explain a. the existence of the disk…
A: a. The existence of the disk of the galaxy
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 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: Current evidence suggests that the universe is a. flat, infinite, and neither expanding nor…
A: To determine: The correct option.
Q: If galaxy A is three times more distant than galaxy B, then according to the Hubble law, galaxy A…
A: According to Hubble's law, the recession velocity is proportional to the proper distance of the…
Q: The number of stars in the Milky Way Galaxy is approximately
A: Number of stars in Milky way galaxy
Q: 21-centimeter radiation observations of the galaxy reveal a. the location of neutral hydrogen…
A: Correct Option is "a"
Q: Heavier elements like carbon, nitrogen and iron are spread out into space mainly through a.…
A: Some 14 billion years ago, a massive explosion occurred which is called the big bang. It created the…
Q: The spectra of the cores of Seyfert galaxies contain emission lines of highly ionized atoms that are…
A: Given, The spectra of emission of the cores of Seyfert galaxies
Q: The traditional theory states that our galaxy formed a. as a large spherical cloud of gas that…
A: According to traditional theory the galaxy is formed by the combination of gas and dust particles.…
Q: Our galaxy is suspected to be surrounded by a galactic corona because the disk of the galaxy a.…
A: Introduction: A galactic corona is used to describe a hot, ionized, gaseous component in the…
Q: Distance of stars are measured in A) Galactic unit B) seller mile C) Cosmic Kilometre D) Light…
A: Many astronomical objects like stars or galaxies are very far away from the earth & giving their…
Q: Brown dwarfs are ____. a. stars with a very thick dust sphere around them, so they appear “brown”…
A: Required : Correct option.
Q: We know that dark matter must exist in galaxies. If not, many of the stars in a galaxy would ...…
A: Dark Matter is an unknown matter which is not visible. The reason behind its invisibility is, it…
Q: The approximate diameter of the disk of the Milky Way is a. 8.0 A.U. b. 8.0 light-years. c.…
A: To determine diameter of the disk of the milky way
Q: Stars formed after the Big Bang had cooled down. From globular cluster dating and from stellar…
A: All of the matter and energy in the universe was once confined to a singularity with infinite…
Q: The evidence leads modern astronomers to conclude that at the cores of active galaxies are…
A: Required : Mass of Supermassive Blackholes in terms of solar mass.
Q: What is the strongest piece of evidence for the existence of dark matter? O As stars die, they…
A: The strongest piece of evidence for the existence of the dark matter is "The orbital speed of the…
Q: If the universe is closed and finite, then a. the universe has a center and an edge. b. the…
A: If the universe is closed and finite, then the final fate of the universe will be very cold and of…
Q: What is the name for the spherical cloud of thinly scattered stars and globular clusters that…
A: Given : What is the name for the spherical cloud of thinly scattered stars and globular clusters…
Q: Our solar system orbits the center of the Milky Way galaxy in about 200 million years. If there were…
A: Like planets move in a circular motion around the sun, the solar system moves in a circular motion…
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: If a very distant galaxy looks overall "blue" to astronomers, from this they can conclude that: O…
A: A region with many young stars appears blue in color. High-mass stars live fast and die young, using…
Q: If a galaxy is 9.1 Mpc away from Earth and recedes at 511 km/s, what is H0 (in km/s/Mpc)? 2. What…
A: Note: As per the policy, only the first question will be solved. If you want the solution for other…
Q: Globular clusters contain no stars more massive than the Sun. Which of the following seems like the…
A: First, we are aware that no stars more massive than the Sun can be found in globular clusters. Any…
Q: In a Universe with Ω=1, without the presence of dark energy, the expansion of the Universe would a.…
A: Dark energy is the energy present in our universe in a high amount which is something 60% and many…
Q: If the Hubble constant equals 70 km/s/Mpc, the age of the universe roughly equals a. 6 billion…
A: Given:Hubble's constant H=70km/s/MpcTo find:Age of universe=??
Q: Evidence that much of the mass of the universe consist of dark energy has come from __________ a)…
A: To find: Evidence that much of the mass of the universe consist of dark energy has come from
Q: Radio maps of the spiral arms of our galaxy a. reveal that our galaxy is a grand design spiral.…
A: Radio maps of the spiral arms of our galaxy map the location of dense neutral hydrogen clouds.
Q: There exists an element visible in the spectrum of galaxies that shows the following spectra when…
A: Introduction: The Doppler effect refers to the apparent shift in the wavelength of a wave when there…
Q: The first stars to form in our galaxy a. had circular orbits. b. had highly elliptical…
A: Population 1 stars are the newer and younger stars.
Q: Assume that the orbital speed of a star is measured at a distance of 15 kpc from he center of our…
A:
Q: How does the age of the universe relate to the Hubble constant? a. The smaller the constant, the…
A: As we know that the inverse of the Hubble constant gives us the age of the universe and which is…
Q: he supermassive black hole at the center of a galaxy has a mass of 6.5 billion solar masses. If we…
A: Schwarzschild radius is defined as the radius below which the gravitational force becomes so large…
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: The largest structures in the universe are a. star clusters. b. galaxy clusters. c. galaxy…
A: Given, Structures in the universe
Q: If Hubble’s constant is taken to be 70 km/sec/Mpc, and a quasar is found with a radial velocity of…
A: Given data: The Hubble’s constant is H0=70 km/sec/Mpc. The radial velocity is v=0.95c.
Q: After the Big Bang the Universe expanded and cooled. What was the temperature of the Universe when…
A: All of the universe's matter and energy were once concentrated in a singularity with infinite…
Q: Pretend that galaxies are spaced evenly, 7.0 Mpc apart, and the average mass of a galaxy is 1.0 ✕…
A: The average density of matter in the universe is given by
Q: A group of 10 to 100 stars that formed at the same time but are so widely scattered in space their…
A: Before answering, We will discuss each of the given options. 1) Globular cluster - Globular…
a. |
at least 20 billion years old.
|
|
b. |
no more than 10 billion years old.
|
|
c. |
about 14 billion years old.
|
|
d. |
flat.
|
|
e. |
closed.
|
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