Galaxies

Anything "can" turn into a black hole, as long as it is massive enough and dense enough. For example, Earth can turn into a black hole if all its mass is squeezed into a point about a centimeter in radius. The only reason that we don't see this happening is because you can't just make Earth denser than it already is (ever try to squeeze a chunk of putty?). Just because the odds of it turning into a black hole is very small doesn't mean it can't turn into one.

{ADDED} No, a comet cannot become a black hole. It is far too small and light (low mass), and loses material every time its orbit brings it relatively close to the Sun - the characteristic tail is that lost material, which like the head, reflects Sun light so is visible. The only objects cable of becoming black holes are the extremely dense cores of very, very large stars that die as supernovae, and even then, not all them become black holes.

Stars are large spheres composed mainly of hydrogen. Heat and pressure at the cores of as star fuses hydrogen atoms together to produce helium and release energy. Some older stars fuse heavier elements.

A quasar consists of a supermassive black hole pulling in more matter than it can swallow. in-falling matter is heated to billions of degrees, hotter than any star, and excess matter is ejected in jets near the poles at nearly the speed of light. A quasar produces much more energy than any star.

I'm going to give you both: Reality and fictional. The reality is, if our Sun was in the Central bulge, we wouldn't be alive to know what the sky would look like. As with most Galaxies, the central bulge is a giant Black Hole that devours anything that gets too close to it. However, with that fact aside if we were to be located there, the sky would have billions of stars. In fact, Earth would have no Night or day; it would only have day. There would most likely be a lot of gases, and we would see this as it swirled around us. Though we can see the gas within the Galaxy from earth (with our naked eye. It's part of that cloudy substance that we can see at night,) it is nothing compared to what we would see if we were located in the Central Bulge. At the Central Bulge, the night sky would most likely appear much like a Nebula; different colors of gas that would be easily visible from Earth. Furthermore, as I said, there would be billions of stars (Mostly young developing Stars)

That is what has been observed, except that spiral galaxies rotate faster than would be expected based on the matter we can see. Thus we infer the existence of dark matter in the rims of these galaxies.

An alternative hypothesis is that something is terribly wrong with our theory of gravity.

To the best of our knowledge the rules of physics are the same no matter where you go.

We (our Solar System) are going around the center of the galaxy; we are in orbit around the galaxy. This is not much different from the Earth going in an orbit around the Sun. The black hole at the center doesn't change anything; it is just one object more that has some mass - an insignificant amount of mass, compared to the remainder of the galaxy.

We (our Solar System) are going around the center of the galaxy; we are in orbit around the galaxy. This is not much different from the Earth going in an orbit around the Sun. The black hole at the center doesn't change anything; it is just one object more that has some mass - an insignificant amount of mass, compared to the remainder of the galaxy.

We (our Solar System) are going around the center of the galaxy; we are in orbit around the galaxy. This is not much different from the Earth going in an orbit around the Sun. The black hole at the center doesn't change anything; it is just one object more that has some mass - an insignificant amount of mass, compared to the remainder of the galaxy.

We (our Solar System) are going around the center of the galaxy; we are in orbit around the galaxy. This is not much different from the Earth going in an orbit around the Sun. The black hole at the center doesn't change anything; it is just one object more that has some mass - an insignificant amount of mass, compared to the remainder of the galaxy.

The Milky Way galaxy is part of the Local Group, which is a collection of several galaxies. The Local Group, in turn, is a part of the larger Virgo Supercluster.

To calculate the age of the planetary nebula, we can use the fact that its diameter is half of a parsec, which is approximately 1.5 x 10^13 kilometers. Given that the nebula is expanding at 20 km/s, we can determine the time it took for the nebula to reach this size to be around 7.5 x 10^12 seconds, or approximately 238,000 years.

It is important that the solar system is in a quiet part of the galaxy because a location away from high levels of radiation, cosmic rays, and supernovae increases the likelihood of habitability. These conditions reduce the risk of catastrophic events that could disrupt the stability and development of life on Earth.

Ursa Major and the Milky way both can be seen all year . However the Ursa major is a constellation while the Milky way is a galaxy. Also the Ursa major is in the milky way, and the milky way is just a galaxy that's in space.

The big and the little dipper are each made up of many stars; each has a different life expentancy.

The big and the little dipper are each made up of many stars; each has a different life expentancy.

The big and the little dipper are each made up of many stars; each has a different life expentancy.

The big and the little dipper are each made up of many stars; each has a different life expentancy.

Galaxies can be classified into three main sizes: dwarf galaxies, which are small and contain less than a few billion stars; Milky Way-sized galaxies, which are intermediate in size and contain a few hundred billion stars; and giant galaxies, which are massive and can contain trillions of stars.

In fact, galaxies have an enormous mass.

In fact, galaxies have an enormous mass.

In fact, galaxies have an enormous mass.

In fact, galaxies have an enormous mass.

It takes about 1.28 seconds for light to travel from the moon to Earth. So if the moon were to travel at the speed of light, it would complete an orbit around the Earth in approximately 1.28 seconds.

There are a number of ways to count these - based on actual catalogs of the observed universe, based on estimates of the observed universe and based on estimates of the entire universe. The actual catalogs (there are numerous ones) have name around 10,000 galaxies. The best quantified amount is the estimate of the observed universe which according to the National Geographic Encyclopedia of Space contains 125 billion. Estimates of the entire universe have gone as far as 300-500 billion.

The Milky Way galaxy is approximately 100,000 light-years in diameter. One light-year is equivalent to about 63,240 astronomical units (AU), so the distance across the Milky Way galaxy would be around 6.32 million AU.

Astronomers have various theories on how galaxies are formed, including the idea that they started as small clumps of matter that grew through mergers and collisions. Observations and simulations have provided insights into the evolution of galaxies over billions of years, but the precise details of galaxy formation remain an area of active research and ongoing discovery.

Only tides on Earth are called "high" and "low." But these occur when the tidal force is the strongest and the weakest, respectively. So the strongest possible tidal forces exist around black holes whose Event Horizon is very small.

It would depend on how big the nearby star was, and how far away it was. There are no really large stars that are nearby, nor are there any stars that are particularly close to us. The closest stars are in the Alpha Centauri group, 4+ LY away.

If a medium size star about 50 LY away were to go nova, it would be like another Venus or Jupiter in the night sky; impressive, but not dangerous. If a large star within 15 LY or so were to go supernova (and there are no stars so close that COULD become supernova), it would be like a second Sun; the radiation would be dangerous for a while, but would fade within a few months or so.

This isn't something that we need to worry much about.

the smallest planet would be Pluto but since scientists say its not it would be MERCURY.

The dark matter theory explains the decrease in brightness of spiral galaxies because dark matter does not emit, absorb, or reflect electromagnetic radiation, making it invisible to telescopes that rely on detecting light. The presence of dark matter provides extra mass in the galaxy, which affects the gravitational interactions within the galaxy and with other galaxies in a way that accounts for the observed decrease in brightness at large distances from the center.

Earths atmosphere consists of 78.09% Nitrogen, 28.95% Oxygen and 1% trace elements, mainly Argon. The martian atmosphere consists of 96% Carbon Dioxide, 1.9% Nitrogen, 1.9% Argon, with oxygen present only as a trace element. Where you to inhale the martian atmosphere you would suffocate. The atmosphere on mars is also very thin, only 0.06% that of the Earth's so your blood would boil etc. The temperature is also incredibly cold ranging from - 87°C, rarely going above freezing, so humans could not function there with no form of space suit.

to enter a parallel universe you have to be able to be able to go in a black hole without dieing and have some sort of way of coming back out and since you are going to be stretched out your going to have to find a way in\out in one piece like a super suit

Additional answer: Because of quantum theory, you may be able to enter a parallel universe using electrodes that alter your brainwaves to a different frequency, thus completely changing your reality. It may or may not be a parallel universe, but a very vivid dream that you are completely submerged in.

You can also enter altered brain states by playing low frequency sounds while you sleep or meditate. They're called hemi-sync sound patterns and they cause you to lucid dream. Remember that parallel universes are not actually trillions of light years away but right next to you; they co-exist in the same universe you are in, yet you cannot observe or interact with them normally. This is due to collapse of reality into a single state by observation.

That sounds like an exciting mission! The images captured from beyond the halo of the Milky Way Galaxy could provide valuable insights into its structure, composition, and evolution. This data could help scientists better understand our place in the universe.

It's really impossible for us to know but we can give pretty good simulations. You see Science is techniccaly limited to what humans can observe. Seeing that the only way to observe the milky way is to travel 1,000,000 light years away is impossible you can't scientifically prove how many arms we have. How ever by calculating the distance, and right ascension of millions of stars we can get a good guess. Most pictures will agree that the Milky Way has something to the effect of 5 arms. It seems like much more because each arme loops around 3-4 times.

Milky plastic refers to a type of plastic material that has a cloudy or opaque appearance, similar to milk. It is commonly used in various applications, such as packaging, electronics, and automotive parts, due to its aesthetics and strong properties.