Cosmology

There is no consensus on the perfect cosmological theory. The search for a theory that accurately describes the origin and evolution of the universe is an ongoing pursuit in astrophysics and cosmology. Theories such as the Big Bang theory and inflationary theory have provided significant insights, but there is still much that remains unknown.

The energy of the cosmic microwave background is about 400,000 times less than the energy of all the stars and galaxies that ever existed. The CMB is the remnant radiation from the early universe, while the energy radiated by stars and galaxies have been accumulating over millions of years.

The Big Bang is estimated to have occurred around 13.8 billion years ago, based on scientific measurements and observations of the expansion of the universe.

The cosmological constant, denoted by the Greek letter Lambda (Λ), is a term introduced by Albert Einstein in his equations of general relativity to account for a static universe. It represents a form of energy density that fills space homogeneously and has a repulsive effect, counteracting the gravitational pull of matter. In modern cosmology, it is associated with dark energy, which is thought to drive the accelerated expansion of the universe. The value of the cosmological constant is crucial in understanding the universe's fate and its large-scale structure.

Earth has been broadcasting radio signals into outer space since the late 1800's.

The age of the universe goes back to the Big Bang. The Bang resulted in a release of energy in the form of radiation. Due to the expansion of the Universe since that time the original radiation has been red-shifted to the microwave range. The background microwave radiation is the best tool for studying the age of the universe.

I am not entirely sure what you mean. Many living things thrive quite well, without anybody caring for them.

Parallel universes are hypothetical which means their existence is only a conjecture.

It is a capital mistake to confuse fantasy fairy tales ( albeit Lewis Carrol was a mathematician) with science fiction, let alone theology. There is some verity in the argument that up to a point L Frank Baum ( Oz) creator laid the seed that George Orwell (l984) hatched, but that is a different tale. The magical looking glass in Alice is merely a magic prop. The tale is not science-fiction in any sense. An interesting fact is none of the characters have real names- they have descriptive phrases such as Mad Hatter, White rabbit, etc)- this is also true of most of the characters in Wizard of Oz and plays H--- with any sort of realism. Both are essentially bad or distorted dreams. Oh so it goes, at least Bugs Bunny had a name.

NO we can not get the samples of dark matter as it is the type of matter in astronomy and cosmology that can not be even seen with telescopes.

The average temperature of the universe now is 2.72548K (the cosmic blackbody radiation of the big bang cooled by expansion). There are places colder, but nothing can be as cold as 0K (absolute zero).

This question has been giving nightmares to cosmologists for years.But with the current evidences, scientists have determined that the universe is expanding at an ever-increasing rate and it will expand forever.

You can find much of this history right here in Earth; for example, looking at geological records.

You are giving the definition for the Big Bang Theory.

You an expect any planet or moon to have magnetic fields. Some more, some less.

The duration of The Big Bang Theory is -1320.0 seconds.

An Einstein-Rosen bridge is a hypothetical shortcut through spacetime, also called a wormhole. A wormhole is like a sort of tunnel with two ends that reach separate points in spacetime.

At that point the universe was too hot for the protons and neutrons to stay together.

In this time, the high estimate for the time for the Universe to reach its final energy state, even in the presence of a false vacuum.

Now the periodic table is limited to 118 elements.