1. Which of these is true about the Big Bang model?   a. The singularity is an established, well-defined part of the model.   b. Cosmic expansion stopped at some point in time.   c. Part of its proof is the amounts of H and He we have in the universe today.   d. The Big Bang was a big explosion that threw matter into many different directions

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: Cite an evidence that we are living in an expanding universe.

A: The universe we are living in is expanding. This is evident from Hubble's observations in 1929. A…

Q: Speed of Light The average distance between the planet Mars and the sun is approximately 228 million…

A: Distance = speed x time

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: Explain the big bang theory.

A: Big Band theory was given by Georges Lemaitre in 1920 and explains the origin of our universe.

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: Complete the sentences. 1. Big bang nucleosynthesis is the formation of new atomic nucleus from…

A: Dear student,  "As per our company guidelines we are supposed to answer ?️only first 3 sub-parts.…

Q: 2. Imagine that you live in a universe where the speed of light is only 100 m/s. Discuss the kind of…

A:

Q: I'm doing a debate about Kalam cosmological. I need to have an example of something out of nothing…

A: Answer:-  Atomic physics, Nuclear Physics, Relativistic Physics , Quantum physics, Thermodynamic and…

Q: 18. An intelligent alien living on a planet in the solar system orbiting Alpha Centauri, the nearest…

A: The time taken by the Alien to receive signals is, t=dv=4.367 light year6.0×1012 miles1 light…

Q: 1)Explain what happens when a observer is moving away from the source ? Support urz answer with…

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: 18. An intelligent alien living on a planet in the solar system orbiting Alpha Centauri, the nearest…

A: Given: speed of signal = 186421 miles/hr distance travelled =4.367 light years   other information:1…

Q: Challenge Problem 1.91 All the stars of the Big Dipper (part of the constellation Ursa Major) may…

A: (a).  Distance = 76.15 ly  (b).  Angle = 129.51°

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: 25) Recall that Hubble’s Law is given by V=HR; this means that H has units of inverse seconds…

A: A parsec is 3.26 light-years and the speed of light is 3 X 105 km/sec. Use 3.156 X 107 sec/yr.

Q: The temperature of background radiation left over from the Big Bang during the creation of the…

A:

Q: Cesar reads about the big bang theory, which explains that the universe expanded as the result of an…

A: Cesar reads about the big bang theory, which explains that the universe expanded as theresult of an…

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: c) The Earth reflects 30% of this energy: Determine the temperature on Earth’s surface. (d) What…

A:

Q: Astronomy: The best current evidence is that the rate of expansion of the universe over time is, a.…

A: This question is from astronomy and astrophysics.

Q: 225 2025 The diagram above shows a conceptual model of a spherical star that generates and emits…

A: a) power generated in interior = volume of star  x power generated per unit cc…

Q: 1. Differentiate between Special Theory of Relativity and General Theory of Relativity.

A: Difference between Special Theory of Relativity and General Theory of Relativity

Q: 3Which of the following best describes a frame of reference?   an experiment that proved that Earth…

A:

Q: 1) The Earth's orbital speed is approximately 30 km/s. A star emits a spectral line with 2=517.3 nm.…

A: The oscillation is set up due to the doppler effect.

Q: 4) The cosmic calendar of Section 1.2 explains where we are in the universe in time. But time and…

A: Let the speed of light = c To find : the distance traveled by the light in 1 wek of cosmic calender…

Q: Create a timeline of the historic development and synthesis of elements after the Big Bang. You may…

A: The Big Bang Theory The Big Bang Theory is the most widely accepted theory for how the universe came…

Q: Dark Matter and Closure• Discuss the existence of dark matter.• Explain neutrino oscillations and…

A: Dark matter is yet to be observed directly. If there is any existence of the dark matter, there must…

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: Which of the following can be used to describe nuclear fission? Check all that apply.     energy is…

A: Nuclear fission is defined as a kind of nuclear reaction that involves the splitting of a solo…

Q: Explain why does scientists believed that the big bang theory is an expansion not an explosion

A:

Q: 2. What features vary from one galaxy to the next?

A:

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: 2) Roughly (within .25 of a year) how long will it take you to travel to Alpha Centauri in the…

A: Given : The question asked is : Roughly (within .25 of a year) how long will it take you to travel…

Q: 4. Using the doppler formula calculate for the missing values. 5 MHz probe, 1.5KHZ shift, 2.5 MHz…

A:

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: A light-year is the distance that light can travel in one year. Similarly, we can define a…

A: The light-year is the distance travelled by light in a year, so similarly the light day is the…

Q: 1. How does Doppler effect apply in the field of astronomy?

A:

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.