Galaxies

When stars collide, the explosion can vary in size depending on the size and nature of the stars involved. It can result in massive explosions known as supernovae, which can release immense amounts of energy and matter into space, impacting their surroundings and creating new elements.

Galaxies are by far the largest. Galaxies contain millions to trillions of stars, each orbiting the galaxy's centre of mass. Our own Milky Way is an example of a galaxy, of which our sun is just one of 200 to 400 billion other stars. The Milky Way is estimated to be in the region of 100,000 to 120,000 light years across.

Nebulae (the plural of nebula) are gas regions where stars are often formed. They exist within galaxies and are therefore much smaller. The famous Orion Nebula is estimated to be 24 light years across, while the larger Carina Nebula is in the region of 100 light years across. Both exist within the Milky Way.

A globular star, or globular cluster, is a cluster of stars. There are around 150 to 158 such clusters known to exist in the Milky Way, with perhaps 20 more yet to be discovered.

A neutron star is a stellar remnant, the result of a supernova (exploding star). They are much smaller than the original star would have been, but are incredibly dense and often rotate very rapidly, emitting electromagnetic radiation as pulsars.

Galaxy Eyes Photon Dragon has absolutely no protections against being destroyed, apart from its battle phase banish ability, which can only be done at a specific part in the battle phase.

So any monster destruction will do it - Exiled Force, Fissure, etc.

You could use a card like Divine Wrath against its Quick Effect, if it tried to banish itself in the battle phase to escape destruction from a card like Mirror Force.

1000000000 to 10000000000000000000000000000000000

No. We can't take a picture of the whole Milky Way from inside the middle of it. We would need to somehow get a camera outside of the galaxy to take that picture.

The galaxy in which our solar system is located is called the Milky Way

It's a dwarf galaxy; the diameter is about 6500 light-years (according to information in the Wikipedia article).

The whole of the galaxy has a diameter of approx 100000 light-years, not just the nucleus! So it is not clear whether the question is about the galaxy or its nucleus.

Spirals.

Your's orbits a gigantic Milky Way bar. Mine orbits a Kit-Kat :)

500 or so

Since a galaxy can have many solar systems and a solar system might have more than one planet, for each galaxy there would be many planets. Therefore there would be more planets than galaxies.

It is impossible to say for sure. Some stars may be very bright, but are much too far away for us to see. All the stars you see when you look outside at night are just from our galaxy. We can only see a few thousand of them, and there are many more than that in our galaxy. There are about 100 billion galaxies out there. Even among the stars we can see, some may be very bright if you were closer to them, but they seem very dim to us. The sun is a star and it seems bright because we are so close to it. There are many stars out there that are a lot brighter than it is, but just seem like tiny points of light to us. So your question cannot really be answered.

It really depends on the type of star, but for certain star types, there is a relationship between the period and the absolute brightness, so if the period is observed, the absolute brightness can be deduced.

Yes. It seems like this question is about the Cepheid variables.

It is called the local spur arm. as we are not directly on the arm of a galaxy just between the sagittarius and perseus arms.

No, they are much smaller.

The expansion is related to the Big Bang.The fact that an environment suitable to sustain life will eventually die out is a natural consequence of the Second Law of Thermodynamics.

neutron star

open cluster

It is a diagram on which stars are plotted according to their absolute magnitudes (or luminosities) against their stellar classifications (or effective temperatures).

Considering we are in it - Yes.

However, it is best observed from the Southern Hemisphere.

The clouds of Magellan and the Sagittarius dwarf are examples of satellite galaxies, which are small galaxies that orbit larger galaxies like our Milky Way. They are located relatively close to the Milky Way and are gravitationally bound to it.

The natural satellite called Luna or Moon orbits the Earth, a planet in the Solar (Sol is the name of our star) system.

The 8 planets with their moons, and planetesimals and asteroids and comets in the Solar system orbit the Sun.

The Sun is just a regular old star out near the edge of our spiral galaxy, the Milky Way. There are billions of other stars and many black holes in the galaxy, too.

The Milky Way is part of a local cluster with several much smaller galaxies that seem to be attaching themselves to the Milky Way.

The Milky Way is just an average spiral galaxy, one of billions upon billions of different shaped galaxies that all seem to be moving away from each other within our Universe.

The Universe is most likely part of a larger multiverse, or multiple universes.

M81 is a spiral galaxy in the Ursa Major constellation, roughly 12 million light years away from Earth. It is very dense with about half the mass and only one-third the diameter of our own galaxy. Like most galaxies, it has a supermassive black hole (of about 70 million solar masses) at the center. It is gravitationally interacting with nearby galaxies M82 and NGC 3077, which has deformed it somewhat. It is very bright, with an apparent magnitude of 7, but still can only be seen through a telescope.

No, a globular cluster is a group of stars that are part of a galaxy.

The Virgo cluster is much bigger. It is a large nearby group of galaxies.