Galaxies

Alderaan is pronounced Aldorande in the Star Wars movies and is a fictional planet.

The star Alderaan is an old and disused term for the stars Procyon and Gomeisa in the constellation Canis Minor.

Plants are not located on the Celestial Sphere. The Celestial Sphere is an imaginary sphere surrounding the Earth, used to map the positions of stars and celestial objects in the sky. Plants are living organisms found on Earth's surface.

No, the Milky Way is not an asteroid belt. It is a large barred spiral galaxy that contains our solar system along with billions of stars, gas, and dust. An asteroid belt is a region in a solar system where many asteroids are found orbiting the Sun.

The collision theory was developed by Max Trautz and William Lewis in the early 20th century. They proposed that chemical reactions occur when reactant molecules collide with sufficient energy and proper orientation. This theory laid the foundation for understanding reaction rates and kinetics in chemistry.

NGC 1132 is estimated to be around 320,000 light-years in diameter, making it larger than our Milky Way galaxy. It is classified as a giant elliptical galaxy located in the constellation Eridanus, approximately 320 million light-years away from Earth.

Distant galaxies do not rise and set like stars in the sky. Their positions in the sky are fixed relative to our perspective on Earth. The apparent motion of rising and setting is a phenomenon caused by the rotation of our planet.

the planets will have same charge where sun will bhi oppositly charged .. the attraction between planets n sun will be increased due to which the galaxy will end . because the planets come near to sun and planets will be destroyed

If you seriously cannot look this up in the textbook you're using, then you do not deserve to have the answer posted here. If they're not listed explicitly in your textbook, then you should have a list of forces - figure it out. If you can't figure it out, then apply this helpful algorithm:

1. Read the problem.

2. Think about the answer.

3. Write it down.

Not every galaxy has a solar system. Solar systems are specific to individual galaxies, such as our Milky Way galaxy, where planets orbit around a star like our Sun. There are galaxies that may not have stars that form solar systems due to different conditions present in those galaxies.

The Milky Way is a spiral galaxy with a defined shape and structure, while irregular galaxies lack a symmetrical shape or structure. Irregular galaxies may have no distinct pattern, such as arms or a central bulge, unlike the Milky Way. Irregular galaxies also tend to have higher rates of star formation compared to spiral galaxies like the Milky Way.

No, a black hole is a region of space with a gravitational pull so strong that nothing, not even light, can escape from it. Therefore, it is not possible for anything to have a greater mass than a black hole.

Yes, galaxies emit light primarily from the stars within them. This light can range from visible light to other forms of electromagnetic radiation such as radio waves, infrared, ultraviolet, and X-rays. The light emitted by galaxies allows astronomers to study their composition, age, and distance from Earth.

Good question. The generally accepted answer is that the universe is expanding, and the expansion is carrying other galaxies away from us, with a speed proportional to their distance.

But "generally accepted answers" have a way of being overthrown by later discoveries, so keep your mind open about this. I'm sure that we will make other discoveries in the coming decades and centuries that will make our descendants wonder "How could they have been so stupid?"

Complete Question here:

For three mass stars (a) a star with a mass three times the mass of the sun, (b) a star with a mass 5 times mass of the sun and (c) a star with a mass 20 times the mass of the sun

--> in each case describe the possible final state of the star after all its fuel is exhausted.

--> comment on the masses, size and density of these states.

--> for each of the end states, briefly describe experimental observations that allow us to find, identify, and verify the existence of object left after star has exhausted its fuel and collapsed to a final state. As an example how do we know that neuron stars exist.

Yes, all galaxies have gravity. Gravity is a fundamental force that exists everywhere in the universe, including within and between galaxies. It is responsible for holding galaxies together, as well as determining their structure and motion.

From Wikipedia (article on the "Milky Way"): "It takes the Solar System about 225-250 million years to complete one orbit of the galaxy"

A C-5 is capable of transporting up to six Boeing AH-64 Apaches or five Bradley Fighting Vehicles, or about 180,000 pounds

milkway

Yes. However, the current rate of star creation is less than when the galaxies were younger.

Yes. However, the current rate of star creation is less than when the galaxies were younger.

Yes. However, the current rate of star creation is less than when the galaxies were younger.

Yes. However, the current rate of star creation is less than when the galaxies were younger.

A star's altitude is the angle measured vertically from the horizon to the star's position in the sky. It indicates how high or low the star appears in the sky from a specific location on Earth. The altitude of a star changes as it progresses across the sky due to Earth's rotation.

Some of the furthest galaxies are believed to be "travelling" faster than the speed of light.

They are not actually "travelling" faster than the speed of light, but creating space, faster than the speed of light.

Young stars are newly formed stars, often bright and hot, that are still in the early stages of their life cycle. Old stars are stars that have aged and passed the main sequence phase, becoming cooler and larger. Dead stars refer to objects that were once stars but have reached the end of their life cycle, such as white dwarfs, neutron stars, or black holes.

Neptune is approximately 2.7 billion miles (4.3 billion kilometers) away from the center of the Milky Way galaxy. The Milky Way is estimated to have a diameter of about 100,000 light-years, with the Solar System located about two-thirds out from the center.

1. It's not a constellation.

2. It's an asterism, which happens to be PART of a constellation, the Great Bear.

3. Asterisms can also be BIGGER than constellations and include several of them, as the "Summer Triangle" includes the Lyre, the Swan and the Eagle.

4. It's used to find the North Star, but this won't always be the case.

4a. For one thing, the Earth's slow wobble (called "precession") means in a few thousand years, Polaris won't be the North Star any more;

4b. For another, the proper motion of the stars of the Dipper means that the "pointer" stars won't always be pointing to Polaris.

5. Many cultures recognize the Big Dipper, but they call it different things: sometimes it's a drinking gourd (Africa); a bear (!) pursued by three Indians (America) or a wagon (Europe) or a plough (also Europe).