An astronomical unit (AU) is defined as the average distance between the solar system and Alpha Centauri the Earth and the Moon the Milky Way Galaxy and the Andromeda Galaxy the Earth and the Sun

Q: The distance to Capella is 42.34 light years. Convert this distance to astronomical units

A: To convert the distance to Capella from light years to astronomical units (AU), we need to know the…

Q: Some thing that is 50 km away has an angular size of five arc seconds how tall is the object write…

A: Angular size, θ = 5 second of arc Distance, r = 50 km = 50×103 m Consider height is h.   First…

Q: A light-year is defined as the distance traveled by light in a vacuum during one tropical year. How…

A: Given data: A light-year is defined as the distance traveled by light in a vacuum during one…

Q: What is the distance between Antares and Sabik? 100.0 light years 186.3 light years 469 light…

A: To give : distance between Antares and Sabik

Q: Earth is about 150 million kilometers from the Sun, and the apparent brightness of the Sun in our…

A: Distance of earth from sun, dE = 150 x106 km Apparent brightness of sun at earth distance is BE =…

Q: Consider two identical stars, A and B. Star B is 10 times farther away than star A. What is the…

A: Two identical stars A and B are given which are at different distances.

Q: How fast do gravity waves move?   3,000 km/s         30,000 km/s         30,000,000 m/s         at…

A: Gravitational waves are first detected by LIGO (Laser Interferometer Gravitational-Wave Observatory)…

Q: Masses of stars and galaxies are usually expressed in terms of   A) neutron mass B) earth's mass C)…

A: The solar mass is the standard unit of mass in astronomy, equal to approximately 2×1030 kg.

Q: What is the surface temperature of a star that emits light with a wavelength of 400 nanometers?

A:

Q: The expansion age of the universe is about _________ a) 1 billion years b) 10 billion years c)…

A: To find: The expansion age of the universe is about

Q: Describes the aurora, Describes the approximate size of Aurora, Describes the approximate distance…

A: Given, Aurora, size of Aurora and Distance from the earth

Q: 25 Which model below best represents the relative sizes of celestial objects from largest to…

A:

Q: Put these components from largest to smallest 1. comet 2. star 3. galaxy  4. nebula 5. planet…

A: Celestial bodies: All the objects like stars, planets, and comets floating across the vast space are…

Q: How far away would the Sun need to be to be just visible to the naked eye (apparent magnitude =…

A: Solution: Given that apparent magnitude, m = 5.90 the absolute magnitude of the Sun, M = 4.83

Q: Which of these correctly compares the masses of different objects in the universe O A moon has less…

A: Correctly compared statement is: Moon has less mass then a star and more mass then the planet it…

Q: an absolute magnitude of -3 is more luminous than an  absolute magnitude of-8.

A: Given, Absolute magnitude of objects

Q: WHERE 9*10^9 came from

A:

Q: How much of the universe appears to be the normal ordinary matter? Group of answer choices 50% 95%…

A: CONCEPT:   Among the whole universe, only a small part is visible and the remaining part is…

Q: What causes the location of the constellations to change throughout the NIGHT?   Group of answer…

A:

Q: What star has the largest stellar parallax as measured from opposite ends of the Earth's orbit about…

A: Parallax is the apparent displacement of an object because of a change in the observer's opinion.…

Q: The giant star Betelgeuse has an angular diameter as observed from Earth of about 0.05 arc seconds.…

A: Solution:-

Q: The star that provides energy for life on earth is Moon Sun  Milky Way

A: There is a life on earthwe need to find which star provides energy for life on earth

Q: How many parsecs are there in 212 light-years?

A: We know that 1 light year = 0.3066 parsecs

Q: Which of these is about 100,000 light-years in diamete A The Solar System (B) The Andromeda Star The…

A: we have to tell the correct options from the given options.

Q: How many seconds are there in one light-year? 1 year = 365 days 3.15 x 105 seconds 3.15 x 106…

A:

Q: A star a distance of 1 parsec away has a parallax angle of 1 definition. by arcsecond arcminute…

A: A parsec is defined as the distance to a star which has a parallax angle of 1 arcsecond.

Q: The greatest parallax angle of any star outside our solar system as viewed from Earth is Group of…

A: 1)We know that the parallax angle for the distant star is smaller, and the parallax angle for the…

Q: Hubble's Law Constant provides the following information about the observable universe: galaxies…

A: Hubble's law constant, often denoted as H₀ provides an estimate of the current rate of expansion of…

Q: If the Sun's mass is about average, how many stars are there in the Milky Way galaxy? The mass of…

A:

Q: Which of these astronomical objects is the largest? O a star O a spiral galaxy O a planet O a solar…

A: The size of an astronomical object is as below in increasing order. Planet< Star< Solar…

Q: Put these in order from smallest to largest Universe Galaxy Solar system Distance between earth and…

A: Here we arrange these things on the bases of their size in increasing order.

Q: How many times dimmer is a star with magnitude +3 compared with the planet Mars with a magnitude of…

A: The magnitude of star is +3, and that of Mars is -1.

Q: You travel to another star system and meet some aliens. They say there are 146 constellations in the…

A:

Q: The star Sirius has an apparent magnitude of -1.46 and appears 95-times brighter compared to the…

A: Part a: Magnitude in astronomy is defined as an index for the brightness of a star and is denoted by…

Q: Star A has an apparent magnitude of -1. Star B has an apparent magnitude of 3.5. Find BĄ/BB, where…

A:

Q: Exercise: One parsec is a unit of distance equal to roughly 3.25 light-years. The prefix Mega means…

A: For this problem, it is required to convert the distance 24 Mpc into kilometers. It is given that, 1…

Q: The center of our galaxy lies in the direction of the constellation of   a. Ursa Minor.   b. Ursa…

A: Milky Way: M.W galaxy holds our solar system. Our galaxy falls into a category of barred spiral.…

Q: Sun Planet X Moon

A: Given: The diameter of the sun=796000 mi Radius rs=7960002=398000 mi The diameter of Moon=2731 mi…

Q: Compare the values of the number of grains of sand in all earth’s beaches with the number of stars…

A:

Q: What is the distance in light years (ly) to Alkaid? 12 ly 104 ly 55 ly 4 ly

A:

Q: A star has a parallax angle of 0.0270 arcseconds and an apparent magnitude of 4.641. What is the…

A: According to the guidelines, only one question will be answered. Please submit the other question…

Q: What is at the center of the Milky Way Galaxy?

A: Required: What is at the center of the Milky Way Galaxy?

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.