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: Why is it not possible to find out what's going on in our nearest star within the span of 24 hours?

A: Einstein's special relativity explains how speed affects mass, time, and space. As per special…

Q: If there are 3x10^7 seconds in one year, a distance of one light year is equal to: O 9 x 10^15 m O 9…

A: Given data:  Time (t) = 3 × 107 seconds Required: Distance of one light year

Q: Stars begin their life cycle in a O black hole O nebula O nova O supernova

A: Answer:) star begin their life cycle in a nebula

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: 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: The number of stars in the Milky Way Galaxy is approximately

A: Number of stars in Milky way galaxy

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 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: Why divide the eqn 2 by eqn 1?

A: From Ohm's law,Voltage So, Where,  is the resistance is the current.

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: 1 million kilometers can be expressed in scientific notation as:  10x10^6 km  10x10^-6 km none of…

A:

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

A: Given, Absolute magnitude of objects

Q: 3. Use the chart given to answer the following Height above earth ) tquatorial Radius (m) orbital…

A:

Q: WHERE 9*10^9 came from

A:

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

A:

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

A: Solution:-

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

A: We know that 1 light year = 0.3066 parsecs

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: Which celestial object contains more mass? O Star O Galaxy O Nebula O Comet

A: Now, using the Kepler's planetary laws, we can write: Mass of star = Around 0.08-150 solar masses…

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: What are the names of the following three well-known constellations?

A: (5) is Cassiopeia Cassiopeia, in Greek mythology, was a vain queen who often boasted about her…

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: Which is the closest star to earth

A: Proximà Centauri

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: A giant structure with billions of stars and sometimes gas and dust is called a O galaxy O star…

A: Galaxy

Q: Which of the following is largest? the size of a typical star. 1 AU. the size of the earth. 1…

A: Required : Which of the following is largest. 1)The size of a typical star.2) 1 AU.3) The size of…

Q: 4 2.

A:

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: Most of the dark matter in a galaxy is located in a galaxy's  (hint: one word) which allows the…

A: It is a fill in the blank.

Q: The galaxy picture below would best be classified as O Elliptical galaxy O Spiral Galaxy

A: Spiral galaxy

Q: The figure below shows the radial velocity of a star plotted as a function of time over the course…

A: The radial velocity is a function of time, and also the radial velocity varies simple harmonically…

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

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

Q: The famous debate where one person argued that faint objects were part of our system and the other…

A: The famous debate also called as the Shapley-Curtis debate.  This debate was held on 26th April…

Q: What is the size of the sun

A: The star that nearest to earth is known as sun and which is situated at the center of the solar…

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.