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

Q: Which of these will the Sun probably become in the very distant future? (choose all that apply)…

A: In about 5 billion years, sun will burn up all of the hydrogen in its core, it will swell into a red…

Q: Supernova A is farther away than supernova B. The brightness of supernova A will be ________ than…

A: The brightness of supernova and its distance from the observer are related as

Q: of a star occur

A: Possible stages of a star that occurs are as follows:

Q: Number the following in order of increasing Open cluster Red giant star 6 1 Main sequence star like…

A:

Q: A star rotates with a period of 30 days about an axis through its center. The period is the time…

A: conservation of angular momentum,

Q: The mass-luminosity relation describes the mathematical relationship between luminosity and mass for…

A: L/Lo = (M/Mo )3.5  here the luminosity is to be found in terms of Lo  M = 4Mo

Q: Hertzsprung-Russell Diagram Blue or blue w White Vellow Red orange Red Rioe Supergl Beteigeuse Main…

A: The region of main sequence contains large number of stars than any other region. Therefore most of…

Q: Russell Diagram Blue or blue-white Red orange Red Superglants Main Sequence Glants Hipho Centour B…

A: Stars are the object which doesn't take any energy to enlighten itself or in simple words stars are…

Q: Supernova C is 10 times farther away than supernova D. The brightness of supernova C will be…

A:

Q: 1. Calculate the acceleration of gravity on A) the Earth. B) the Moon. C) a neutron star.

A:

Q: A Black Hole gets its name because it is the remains of a massive black star.  True  False

A: When the massive stars collapse, then the black hole is produced. It absorbs all the mass and light…

Q: fill in missing word a) One difference between a type I and type II supernova is the formation of…

A: Few sentences are given and we need to fill in the blanks.

Q: Find the distance in parsecs to van maanen's star, a nearby white dwarf, which has an annual…

A: given ,       parallax (p) = 0.232 arcsec

Q: Giant and supergiant stars are 10 to 1,000 times larger in diameter than the sun and   a. are half…

A: Given statement :  "Giant and supergiant stars are 10 to 1,000 times larger in diameter than the…

Q: What size star is the sun? O supergiant O medium O giant O white dwarf

A: The sun size is about 696340 km in radius and it's mass is 1.989*10^30 kg.

Q: The mass-luminosity relation describes the mathematical relationship between luminosity and mass for…

A:

Q: Rank these astronomical objects based on their density, from smallest to largest.   A) the…

A: The given astronomical objects are a) the singularity of a black hole b) a main sequence star c) a…

Q: If a stellar remnant is greater than 3 solar masses, the resulting object will be a   a. red dwarf.…

A: When the mass of stellar remnant is greater than 3 solar masses, the resulting object become a black…

Q: Pulsars result from a. expanding red giant stars b. white dwarf supernovas c. spinning neutron…

A: A pulsar is a neutron star that spins and releases concentrated beams of radiation from its poles.…

Q: An endothermic reaction leads to, a) T-Tauri Star b) Supernovae c) Protostar d) Hydrostatic…

A: Required :: An endothermic reaction leads to ...

Q: When a mass is transferred through the inner Lagrangian point in a binary system toward a white…

A: Option A is correct answer

Q: Object Mass Radius Person 70 kg 1E-3 km Моon 7E22 kg 1.7E3 km Sun 2E30 kg. 7E5 km Earth 6E24 kg 6E3…

A: (i) Person : g=GMR2 & VEsc=2GMR  (formula for calculation) g=6.67×10-11×7012 g=4.67×10-9m/s2…

Q: Black holes are formed by A. collapsed dark nebulae. B. supernovae from binary stars. C. a lack of…

A: ASTRO PHYSICS

Q: Why is iron significant to understanding how a supernova occurs? A. Iron is the heaviest of all…

A:

Q: 21. Giant or Nebula Supergiant Stars Small or Medium- sized Star 22. Red Giant Star 23. 24. White…

A: 21 Pro star 23 Plantery nebula 22 Super nova 24 black hole

Q: A less massive star will usually live longer than a more massive star O True O False

A: In star hydrogen is the fuel

Q: Hypernovae are thought to be   a. a star greater than 20 solar masses collapsing into a black hole.…

A: A hypernova is a type of supernova but having more energy  Hypernova contains a tremendous amount of…

Q: A star 2-5 times the mass of the sun and collapsed to a size of the 12 km rotates with a speed of…

A:

Q: Size, surface temperature, and distance from the Earth are three things that determine the of the…

A: Ques:

Q: Hertzsprung-Russell Diagram Blue or bluewhite White Yellow Red orange Red O Rigel Superglants…

A: Giants : red color white drafts : yellow

Q: The Local Bubble is:

A: Option —A

Q: Pulsars are thought to be A. accreting white dwarfs B. rapidly rotating neutron stars C. unstable…

A: The periodic emitters called pulsars are thought to be neutron stars

Q: A Type Ia Supernova is an example of a:

A: A type Ia-supernova is an example of a standard candle. supernova is the result of a blast into the…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.