How are theoretical physics, astrophysics, cosmology and string theory related to one another?

The red shift explains the expansion of universe.The CMBR represent the remains of ..2.7 degree K is every where in the universe..The distant galaxies move at more speed than near...

Not to oversimplify this but the very nature of "theory" means that an absolute proof does not exist. In the case of the development of the early universe, it will...

astronomy focuses on observation while astrophysics applies principles of physics to the the entire cosmos. Both focus on the cosmos (universe). think about this way: one is observational science with...

Cosmology is actually the study of birth of the universe, the changes and evolution and the fate or end of the universe. Cosmology is a subject as whole study of...

Astronomy is about the observation of bodies in the sky. These include planets, moons, comets, stars, galaxies, nebulae and other objects. It involves determining the position, distance, motions and brightness...

Astronomy is a natural science that deals with the study of celestial objects, such as stars, planets, comets, nebulae, star clusters and galaxies. Astrophysics is the branch of astronomy that...

Astrophysics is the science which aims to "ascertain the nature of the heavenly bodies, rather than their positions or motions in space." Astrophysics studies all extra-terrestrial bodies, such as...

In the early Twentieth century, two frameworks of physics were published: $1.$ Theory of Relativity by Albert Einstein $color(white)(0000000000000000000)$and $2.$ Quantum Mechanics Both these theories try to explain the formulated...

No cloudy nights..There are lot of electro magnetic disturbances on earth due to different electrical equipment working on Earth..Also radio, TV transmissions, communications Lunar surface is free from all these.....

For example, the dark side of the moon would provide an excellent location (low temp, low e-m noise) location for a radio or infrared telescope. It would provide a...