The Hubble constant is (approximately) 70 kilometers per second per megaparsec. At approximately how far in the future, will the scale-factor be 1% larger than it is today?
Q: Assume a flat FRW universe, dominated by radiation throughout its history. Calculate the physical,…
A: The objective of the question is to calculate the physical, cosmological horizon size at a given…
Q: As the Universe becomes older, what effect will that have on a slope of the Hubble's diagram: It…
A: Doppler effect in light is the change in frequency of light observed by the observer when the source…
Q: Calculate the number of miles in a light-year, using 1.86 105 mi/s as the speed of light. (Hint:…
A:
Q: why in the pythagorean theorem formula is it "a^2 - b^2" instead of "a^2 + b^2"
A:
Q: Suppose we find an Earth-like planet around one of our nearest stellar neighbors, Alpha Centauri…
A:
Q: 2. Using your average Hubble's constant, calculate the age of the Universe. For this, first, we use…
A: Given: Hubble constant H=71 [km/sMparsec] According to Hubble`s law, it was found that the galaxies…
Q: What was the maximum age of the universe predicted by Hubble's first estimate of the Hubble…
A: Hubble’s time: It is defined as follows, Here H is the Hubble’s constant which has unit km/s/Mpc…
Q: Calculate the number of miles in a light-year, using 1.86 105 mi/s as the speed of light. (Hint: The…
A: The light-year is the unit of length, and it is used to represent the astronomical distance.
Q: given: a (distance to center of galaxy in AU) = 1,717,914,439 AU P (suns orbital period in years)…
A: Given: a (distance to center of galaxy in AU) = 1,717,914,439 AU P (suns orbital period in years) =…
Q: What was the maximum age of the universe predicted by Hubble's first estimate of the Hubble…
A: Hubble's law is the observation in the cosmology regarding the motion of the galaxies away from the…
Q: Suppose the Hubble constant were not 22 but 12.1 km/s per million light-years. Then what would the…
A: Write the expression for the volume of the sphere. Write the expression for the mass. Here, ρ is…
Q: What if the Andromeda galaxy were to disappear How long before we would notice?
A: About 2.5 million light-years separate our solar system from the Andromeda galaxy. If it vanished,…
Q: According to the cosmological principle, our place in the universe does not appear to be…
A: According to the cosmological principle, our place in the universe does not appear to be…
Q: Calculate the age of the universe for the following Hubble's constant, (b) 65 km/s/Mpc
A: As per Hubble's law, the universe is expanding. If we assume that the expansion's apparent velocity…
Q: If the Sun is 4.6 billion years old, how many times has it orbited the Milky Way galaxy? (The Sun is…
A:
Q: Let's say that the number density of galaxies in the universe is, on average, 3 × 10–68 galaxies/m3.…
A: Given :number density of galaxies, n = 3 × 10–68 galaxies/m3 Observable distance by…
Q: tudying for test: A new astronomical measurement suggests that the Hubble constant is 1112…
A: Given the new value of of the Hubble constant H0=1112km/s/MpcWe know1Mpc=3.086×1019kmHence…
Q: When the universe was approximately one second old its size grew by a factor of 10 to the power of…
A: When the universe was approximately one second old its size grew by a factor of 10 to the power of…
Q: What was the maximum age of the universe predicted by Hubble's first estimate of the Hubble…
A: The first estimate for the Hubble constant H was 500 km/s/Mpc. The formula for the age of the…
Q: If a galaxy is 9.3 Mpc away from Earth and recedes at 508 km/s, what is H, (in km/s/Mpc)? |km/s/Mpc…
A: velocity, v=508 km/s distance, d=9.3 Mpc=9.3×3.086×1019 Km=28.7×1019 Km. Hubble constant,…
Q: Calculate the age of the universe for the following Hubble's constant, 200 1... - N (d) 20 km/s/Mpc
A: As per Hubble's law, the universe is expanding. If we assume that the expansion's apparent velocity…
Q: According to the version of the Big Bang Theory without a Cosmological Constant (and without Dark…
A: Hubble's Law states that as the universe is expanding in all directions, the receding velocity of an…
Q: If the Hubble's constant was 100 km/s/Mpc instead of 70 km/s/Mpc what would be the estimated age of…
A: It was observed that the galaxies were moving away from us. Edwin Hubble calculated their recession…
Q: Consider three periods in the history of the Universe: one million years after the Big Bang (age = 1…
A: In early times, the Universe was expanding at a rapid pace. Then, the rate of expansion of the…
Q: Calculate the age of the universe for the following Hubble's constant, (a) 50 km/s/MDC
A: As per Hubble's law, the universe is expanding. The recessional velocity of galaxies is directly…
Q: Calculate the age of the universe for the following Hubble's constant, m (c) 80 km/s/Mpc Of
A:
Q: Calculate the age of the universe when the temperature was 10¹ K.
A: The age of the universe when the temperature was 1013 K. Given, TemperatureT=1013 K
Q: If a 20 yr. old astronaut left to explore the galaxy in 2010 travelling at 1.30 x 108 m/s and…
A:
Q: Let's say that the number density of galaxies in the universe is, on average, 3 × 10–68 galaxies/m3.…
A:
The Hubble constant is (approximately) 70 kilometers per second per megaparsec. At approximately how far in the future, will the scale-factor be 1% larger than it is today?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- In the reading, you were told that there were roughly 10,000 galaxies in the image of the Hubble Ultra Deep Field alone. The image is roughly 10 square arcminutes and there are roughly 1.5*10^8 square arcminutes composing the entire sky. With that in mind and assuming that the Hubble Ultra Deep Field represents an average part of the sky, roughly how many galaxies may exist in the observable universe? (Please include commas for every factor of 1,000; for example 2,343,567,890)How many times longer than the length of recorded history is the age of the universe? I was also given that the length of recorded history is 10E11 s, and that the age of the universe is 10E18 s. But, when putting 10E18/10E11 = 10E7, I get the wrong answer.Calculate the age of the universe for the following Hubble's constant, (a) 30 km/s/Mpc
- Your friends are talking about Olber's Paradox: Friend 1: When the universe was quite young, it was also quite small, and therefore light was trapped inside the universe. This is why we don't see light from the edge of the universe in every direction. Friend 2: No, Olber's Paradox describes only light from stars, not from galaxies, and why you can't use light from distant stars to see at night. Friend 3: You're both right and you're both wrong. The paradox concerns itself with the expansion of the universe, and explains why light from the early universe was able to be released. Are any of them right, in part or in whole?If the speed of light is given as 299,792,458 meters per second and the wavelength is 560 nm. what is the frequency of this light? Give your answer in THz!A new astronomical measurement suggests that the Hubble constant is 51 kilometers per second per Megaparsec. If this measurement is correct, what would the Hubble time be in units of years? Is this a plausible value based on other astronomical evidence? Why or why not?
- If Jim could drive a Jetson's flying car at a constant speed of 330 km/hr across oceans and space, approximately how long (in millions of years, in 106 years) would he take to drive to a nearby star that is 8.7 light-years away? Use 9.461 × 1012 km/light-year and 8766 hours per year (365.25 days).If you observe light emitted from a distance object when the cosmic background temperature was Tz=54K, what is the redshift z of that light? At that redshift, what was the diameter Dz of the universe at that time compared to the diameter of today's universe D0?