Now let’s determine when the universe “started its trip”. The distance is 800 Mpc, but first convert Mpc into km because the rate, or velocity, is in km/sec. 800 Mpc = _____________________km Use equation (E) to determine how many seconds ago the universe started: _____________________secs

Q: Sketch a caricature or diagram of the situation or phenomenon showing that Hubble’s Law strongly…

A: Hubble's law is mathematically given by, v = H0 * d Where,v is the galactic velocity, H0 is the…

Q: How much would you age in traveling a distance of 5.39 light years from earth if you were able to…

A: Given Total distance = 5.39 light years Speed of person = 0.691c We have to calculate the age…

Q: The temperature of the CMB today is T=2.725 K. Calculate the temperature of the CMB at redshift…

A: Given  T = To = 2.725 K z = 2000 Temperature of CMB at redshift  'z' is given by T = To (1+z)

Q: Current evidence suggests that the universe is   a. flat, infinite, and neither expanding nor…

A: To determine: The correct option.

Q: What major factor determines the future of the universe? Why?

A: Earlier cosmologist believed that due to gravity of supermassive black holes and many other massive…

Q: Calculate the number of miles in a light-year, using 1.86 105 mi/s as the speed of light. (Hint: The…

A: The light-year is the unit of length, and it is used to represent the astronomical distance.

Q: How much would you age in traveling a distance of 4.50 light years from earth if you were able to…

A:

Q: Assume the observable Universe is charge neutral, and that it contains n nuclei (hydrogen plus…

A:

Q: Give the consequences of the Postulates of the General Relativity.

A: The theory of general relativity states stat, the massive objects cause a distortion in space-time,…

Q: In 2030, the Australian Space Agency launches a spaceship to our nearest neighbour Alpha Centauri (4…

A: Given: Distance between Australian space agency and Alph Centauri, d=4 ly Speed of spaces according…

Q: Suppose a particle called a kaon is created by cosmic radiation striking the atmosphere. It moves by…

A: Given data: Speed of particle is, v=0.980c. Actual life of particle is, T=1.24×10-8 s.

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: Which galaxies are moving the fastest away from us?

A: Our nearest galaxy is Milky way.

Q: An astronaut takes a trip to Sirius, which is located a distance of 8 light-years from the Earth.…

A: The formula for the length contraction is:

Q: Consider the following figure. If you are traveling at 25% the speed of light (0.25c), what would…

A:

Q: Travel to the stars requires hundreds or thousands of years, even at the speed of light. Some people…

A: It is given that, M=1000 kg

Q: How much would you age in traveling a distance of 4.84 light years from earth if you were able to…

A: Givend=4.84 light yearv=0.952 c

Q: What is the principal difference between the theory of special relativity and the theory of general…

A:

Q: What was the most startling discovery about the universe that occurred in 1998? O its expansion is…

A:

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: When the universe was approximately one second old its size grew by a factor of 10 to the power of…

A: When the universe was approximately one second old its size grew by a factor of 10 to the power of…

Q: A woman living in galaxy X is about to deliver her first baby. The nearest hospital is in galaxy Y,…

A:

Q: According to the Big Bang Theory, order from earliest to latest, the sequence of events that are…

A: Before the Big bang all the forces were united. During the first fraction of a second, the forces…

Q: Who won the Nobel Prize for discovering the cosmic background radiation?   a. Penzias and Wilson…

A: About discovering of cosmic background radiation .

Q: Recent findings in astrophysics suggest that the observable universe can be modeled as a sphere of…

A: It is given that,

Q: Assume the observable Universe is charge neutral, and that it contains n nuclei (hydrogen plus…

A: Given information: The number of nuclei in the universe (n) = 1080  The mass fraction of helium…

Q: How many atomic nuclei (diameter = 1 × 10¬1 cm) would it take to stretch from one end of the known…

A: diameter of atomic nuclei (d) = 10-13 cm = 10-15 m distance of one end of universe to its other end…

Q: Which of the following does not explain the concept of the Big Bang theory? O 5 billion years ago a…

A: The Big Bang Theory tells how the universe began. Theory says that it started with a small…

Q: A severely injured Peter can only live for the next 3.5 hours. Before dying, he wants to go back to…

A: Speed is the distance traveled per unit time. Its SI unit is m/s. The SI unit of distance is meter.…

Q: According to the standard Big Bang theory (neglecting any effects of cosmic acceleration), what is…

A: Hubble constant = 50 km/s/Mpc age of universe = inverse of hubble constant  = 1/(50 km/s/Mpc ) Using…

Q: If the Sun was shrunk to fit the same mass into a smaller volume what would happen to the curvature…

A:

Q: What is the speed of light? Is it constant all over the universe?

A: The value of speed of light is,

Q: What does it mean that energy in the universe is “conserved” ?

A: solution is given as

Q: Is it possible in principle for a human being who has a life expectancy of 70 years to make a…

A: Life span = 70 years  distance of universe = thousand light years

Q: Describe the Galilean Relativity?

A: Introduction: According to the Galilean Relativity, if Newton's laws are true in any frame of…

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.