What do we mean when we say that outer space is not really empty?

Q: How was the changing technology increased our understanding of the universe? How do the motions of…

A: Help of technology we are able to study universe very easily help of technology we discovering new…

Q: if you know that the life time of particle is 100*10-6 s. 1- what its life time if its moves by…

A: Life time of particle normally is,  t=100 x 10-6 s Speed of the particle moving at, v=0.96c Where c…

Q: State Einstein's principle of relativity.  How does this principle then lead to his postulate that…

A:

Q: What do you mean by dark matter?

A: Dark matter is composed of particles that do not absorb, reflect, or emit light, so they cannot be…

Q: Which one of these statements about spacetime is false? Waves can travel through spacetime. They are…

A: Time is considered as forth dimension in space time coordinates.

Q: What does Einstein’s theory of relativity represent?

A: Einstein’s theory of relativity

Q: Choose the BEST answer to the following: Einstein’s second postulate tells us that the speed of…

A: Answer: bi,e is a constant in all frames of reference.

Q: What do you mean by space quantization?

A:

Q: How can physics help us gain a greater understanding of the interconnected ness of everything in the…

A: The ness interconnection of the universe can be understand with the help of physics. The physics…

Q: What is space wave propagation?

A: The space wave propagation is the propagation of the electromagnetic waves on the earth surface…

Q: What do we call the “stretching out” of time?

A: The stretching out of time is called as time dilation.

Q: When we look out into the universe, we see into the past. John Dobson, founder of the San Francisco…

A: The statement is correct.

Q: hformation to answer the next two questions One futuristic scheme to produce power on a large scale…

A: Power (P) = 5×109 W diameter (d) = 8 km Distance (D) = 7.52×106 m

Q: What do you mean by proper time and proper lenght?

A: Proper time and proper length can be defined as:

Q: Your astronaut twin brother is exploring a planet of a star far out in space. Ignoring the time…

A: Brother's age 2 years for 1 year of my age⇒ t∘=t   ,     t'=2t

Q: When you drive down the highway, you are moving through space. What else are you moving through?

A: An object sitting at rest not moving through space but as the time never stops, so it's moving…

Q: What is dark matter and how do we know it exists?

A: Dark matter is the invisible form of matter which can not be directly detected but its effect can be…

Q: Why do we think that nothing, other than light, can travel faster than the speed of light?

A: According to the Einstein’s theory of relativity nothing can travel faster than light.

Q: What is cosmic infalation ? Explain it.

A: Cosmic inflation: This is the theory based on the inflation in the cosmology. It was developed in…

Q: What do you mean by cyclotron?

A: What do you mean by cyclotron:- EXPLAINATION:- It  is a type of particle accelerator in which…

Q: Explain why the speed of light is the maximum attainable

A: Hi , please find the answer

Q: What is Newtonian principle of relativity?

A: Newtonian principle of relativity: Newton describes the motion of object with respect to a frame.…

Q: What is the implication of strong gravitational force to time and wavelength of a spectrum in…

A: Required : Implication of strong gravitational force to time and wavelength of a spectrum in…

Q: I am confused about this question... In The Planet of The Apes, astronauts return from a space…

A: In the planet of the apes, astronauts return from a space voyage to find a far distant future ,…

Q: Explain semiclassical gravity from every respect?

A: Semiclassical gravity is an estimation of quantum gravity theory in which one considers matter…

Q: is 4D spacetime

A: physics, spacetime is a mathematical model which combines the three dimensions of space and one…

Q: Difference between special relativity and general relativity

A: To write the difference between special relativity and general relativity

Q: What do you mean by Clock Face Rule?

A: When an observer, looking at the face of the coil, finds the current to be flowing in the…

Q: Why is dark energy required to explain the universe as we see it today according to the Big Bang…

A: in this question we discuss about dark energy .

Q: How does motion of Earth affect our lives? How was the changing technology increased our…

A: 1. Earth's rotation is a major factor for life prevailing on earth. The formation of day and night…

Q: What is our "cosmic address"

A: When give your address to somebody, you want to make sure you can be found. Earth is a part of the…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.