1. Why is Big Bang the most reliable theory on the formation of the universe? Give its evidences and explain them briefly on how you understood them.

Q: Why are so many astronomical objects in the universe flat today? (Like the solar system, Saturn's…

A: Given : Astronomical object : An astronomical object or celestial object is a naturally occurring…

Q: Please explain this question If the universe had expanded more slowly than it did, the transition…

A: Required : How is the argument wrong.

Q: The Apollo program (not the lunar missions with astronauts) being conducted at the Apache Point…

A: The spped of the ligth v=3×105m/ss=384,472km

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: Briefly describe the illustrations by citing scientific explanation based on the wave particle…

A: According to Wave particle duality theory light and matter exhibit  both waves and particle. The…

Q: Astronomy   Briefly explain what evidence we can use to learn about the lives of stars even though…

A: The life cycle of stars can be determined by observing the clusters of stars and the observation can…

Q: Using the GUFSA Template. Round off your final answer to the nearest hundredths. As we already know,…

A:

Q: Direction: Using the given figure of the big bang theory, explain how this theory helps you to…

A: In this question we have to answer how Big Bang theory helps to understand that the universe is…

Q: Write your findings about special relativity with examples, how you can understand space-time…

A: Special relativity: It is introduced by the Einstein in 1905. According to him, “the physics laws…

Q: Define energy

A: According to guidelines, I am attempting only 1st question.

Q: energy

A: Dark energy is contributing to 70 % of the universe and this is causing the universe to expand and…

Q: how far light would travel in a week on the “cosmic calendar”?

A: To find : How far does the light travel in 1 week of cosmic calender

Q: Give a brief yet concise answer to these two questions below and draw appropriate icons or images…

A: Ans:- 1 Image-1

Q: Activity 1.3 Fill in the blanks Answer the following in a separate answer sheet 1. What are the four…

A: These reactions are one of the most important reactions in research of fusion studies for…

Q: Direction: Select the best answer. Write the letter on a separate answer sheet. 1. It refers to a…

A: Q.1  Option C) Nucleosynthesis  is correct. Explanation:

Q: Please explain all pieces of the argument cle Thanks! Give a physical argument explaining why…

A:

Q: What determines the validity of a theory?

A: The researcher or scientist gives the theory. They do some research work and finally give a theory.…

Q: 1. Why big bang theory the most accepted theory on the origin of the universe?

A: “Since you have asked multiple questions which are not linked with each other, we will solve the…

Q: Astronomers can determine the heat of various areas of the universe by making observations about…

A: Gamma rays have the shortest wavelengths and the highest energy levels of any electromagnetic wave.…

Q: Astronomy) Cygnus Loop Velocity. If the Cygnus Loop is 25 pc in diameter and is 10,000 years old,…

A:

Q: Black Hole Accretion Disk.  Part A: If the inner accretion disk around a black hole has a…

A:

Q: 4. At time = 0, you are given 2000 kg of radioactive substance R that decays into stable sub- stance…

A: Given, Mass, m=2000 kg, half life, h= 10 years, and total time, t= 40 years.

Q: Define Unification, and why scientists are striving for the unification of all forces?

A: Required : Define Unification and why scientists are striving for the unification of all forces.

Q: Answer the following questions. A. 1. How did Greek philosophers contribute to the discovery of the…

A:

Q: Define matter and antimatter.

A: Matter The matter is defined as anything that has mass and volume which takes up space. All physical…

Q: 3. The Androme da Galaxy hasa Muss of around 4x1042 kg and is 24k10" mauay What is you eScaße…

A: mass of galaxy = 4 * 1042 kg d = 2.4 *1 022 m Vescape = 2GM/d

Q: 1. What is wave-particle duality? How does it apply to photons and electrons? Why do we not…

A: Wave–particle duality is the concept in quantum mechanics that every particle or quantum entity may…

Q: 1. What is escape velocity? 2. What does it mean to have a binding energy? 3. Under what conditions…

A: here we define escape velocity

Q: Hubble's First Attempt. Edwin Hubble's first attempt to measure the universe's expansion rate was…

A: (A)       150  km/s/ Mly  (B)   2.0 × 10 9   year

Q: List the four forces of evolution. For each, state explicitly whether it is a strong or weak force…

A:

Q: For the graph shown above, a) what quantity would you label the y-axis with if the distance is…

A: a) For the graph shown above, the y- axis would be labelled as velocity, if the x-axis is labelled…

Q: Describe rest energy, and explain how it can be converted to other forms.

A: Describe rest energy and how it can be converted to other forms. Rest Energy:- it is the correct…

Q: Determine the wavelength of the standard 21-cm hydrogen spectral line that we receive from the…

A: Given, Wavelength of spectral line = 21 cm Red shift parameter z = 3.8

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.