Distance of stars are measured in   A) Galactic unit B) seller mile C) Cosmic Kilometre D) Light year

Q: Nuclear fusion occurs during most of a star's life O True False

A: Answer :- ---------- True  Nuclear fusion occurs during most of a stars life. Because  It is the…

Q: Let us assume that our galaxy consists of 2.5 × 1011 stars each of one solar mass. How long will a…

A: Mass of the galaxy is

Q: In the image below you see two interacting galaxies; one is nearly face -on and the other is nearly…

A: The shape of the galaxies says the evidence of the tidal disruption.

Q: random times over the last 1010 years. The rate of star formation is simply the number of stars…

A: Number of stars in our milky Way galaxy is  N=9×1010 Time taken in the formation of a plane

Q: Where is Uranium produced? Group of answer choices In the early universe after the Big Bang. In the…

A: During supernova explosions, this is very powerful explosion creating atomic nuclei during the…

Q: We are part of the galaxy. * Constellation

A: Earth is a part of milky way galaxy. Ans. Milky way galaxy.

Q: Use the circumference and speed to figure out how long the Sun takes to go once around the Galaxy…

A: Given, distance from the sun to the centre of the milky way galaxy, r = 8000 parsecs = 8000 pc So,…

Q: By the term universe, astronomers mean:

A: Planets, stars, galaxies, light, and even the vacuum between these entities are all included in the…

Q: classification helped Darwin understand how creatures evolve. How has classification helped you…

A: Our universe contains million number of stars. These stars continuously emit light radiation, heat…

Q: Suppose you observe a star orbiting the galactic center at a speed of 1100 km/s in a circular orbit…

A:

Q: The Sun is located towards the edge of the galaxy (see the image on the next page), about 2/3rd of…

A:

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: The Whirlpool galaxy is about 30 million light-years away. If you were in a spaceship that could…

A: The time taken by the person to reach the Whirlpool galaxy according to an observer on Earth is…

Q: Another way of explaining a word is to enumerate the different parts of which it is made: “X…

A: The Solar system consists of our star, i.e. the Sun, and planets and heavenly bodies which are…

Q: Astronomers frequently say that “there are more stars in the universe than there are grains of sand…

A:

Q: Which of the below rotation curves best represents the orbital speeds stars in the Milky Way Galaxy…

A:

Q: Galaxy A 3 billion light-years Galaxy B By the time the light from the explosion in Galaxy B reaches…

A: Answer Our universe is expanding at somewhere around 70 km/s/Mpc which means that for every…

Q: How many atomic nuclei (diameter = 1 × 10¬1 cm) would it take to stretch from one end of the known…

A: diameter of atomic nuclei (d) = 10-13 cm = 10-15 m distance of one end of universe to its other end…

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

A: Galaxy

Q: Describe the age and temperature of stars that make up spiral galaxies and their location.

A: A galaxy can be bombarded by other, smaller galaxies. Even if a galaxy is isolated, internal…

Q: Astronomers frequently say that "there are more stars in the universe than there are grains of sand…

A:

Q: What is the ratio of the distance to the nearest galaxy to the size of the Milky Way galaxy? This is…

A: Given information: The diameter of the milky way (dMW) = 1021 m The distance of the nearest galaxy…

Q: A scientist, using a telescope, sees arcs of light around a galaxy. In 3–5 sentences, explain the…

A: Answer:-    A scientist, using a telescope, sees arcs of light around a galaxy. The arcs of light…

Q: billion .stars in the Milky Way 100 and 300 O 100 and 400 O 100 and 200 O 100 and 500 O No one of…

A:

Q: Astronomers are always seeking to build bigger, more powerful telescopes, which will allow them to…

A: Astronomers are always seeking to build bigger, more powerful telescopes, which will allow them to…

Q: Assume that a typical galaxy contains about 200 billion stars and that there are more than 150…

A: Given, a typical galaxy contains about 200 billion stars and that there are more than 150 billion…

Q: Indicate whether the following statements are true or false. (Select T-True, F-False. If the first…

A: Since your question has multiple-subparts, we will solve the first three sub-parts for you. If you…

Q: Suppose you observe a star orbiting the galactic center at a speed of 1500 km/skm/s in a circular…

A: Given information: The speed of the star (v) = 1500 km/s = 15×105 m/s The radius of the stars orbit…

Q: Is the concept of Big Bang already a perfect scientific theory to explain the existence of the…

A: Astronomers use the term "big bang" to describe how the cosmos began. It is the concept that the…

Q: If the fastest passenger aircraft can fly 0.49 km/s (1,096 mph), how long would it take to reach the…

A:

Q: The distance unit best for interstellar distances is the light-year. ___   The distance unit best…

A: light year is distance travelled by light in 1 year and is used to measure interstellar distance. so…

Q: The background radiation has an average temperature of 2.7 K, using Wien’s Law, the current…

A: Given data:     Current temperature, To=2.7k      Wavelength, λo=1mm      Wavelength, λe=51.1μm…

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.