Galaxies

a big explosion occors

william herschel

In 1923, Edwin Hubble showed that the "spiral nebulae" that were presumed to be within our galaxy, the Milky Way, were actually other galaxies that lay far beyond our. The following year, he showed that the Milky Way was just one of many galaxies in the universe. Hubble's discovery, announced on January 1, 1925, fundamentally changed the view of the universe.

It seems that the Milky Way and the Andromeda Galaxy will collide, in about 3-4 billion years.

The Milky Way is in space. Through together, there is also constellations and (mostly) stars around it.

As some of these planets MIGHT be near the Milky Way:

Sun(?)

Moon(?)

Earth(?)

Mercury(?), Mars(?), Jupiter(?), Venus(?), Saturn(?), Uranus(?) and Neptune (?). Find out if these planets ARE actually near the Milky Way on Google.

No answer for the Milky Way "dangerous" party thingy. But good information here, right? :)

on a flat map

One can purchase spiral notebooks from retailers such as Officemax, Barnes and Noble, Staples and Officeworks. One can also purchase online from sites such as Flipkart, Notemaker, Office Yes and Myntra.

Kepler 22-b is a planet. It is located in our Milky Way galaxy - like most planets discovered so far. Any planet outside of our Milky Way would be extremely hard to detect.

Stars come in a variety of types. Blue stars, which are very hot, tend to have shorter lifetimes than red stars, which are cooler. Regions of galaxies where stars are currently forming are therefore bluer than regions where there has been no recent star formation. Spiral galaxies seem to have a lot of gas and dust, while elliptical galaxies have very little gas or dust.

Andromeda and the Milky Way are approximately 2.5 million lightyears apart, and are constantly nearing each other. The Milky Way measures about 100,000 lightyears across, and Andromeda is roughly 220,000 lightyears.

About 99.9999999% of the universe (or so). The Milky Way is a single galaxy in which our star, the Sun, exists. There are billions more galaxies like the Milky Way in the rest of the universe.

Their shape is an elipse

Yes it is. A supercluster has up to 50 galaxies where the local group contains up to 30.

The local group cluster is actually located within the Local (or Virgo) supercluster.

Arcturus has a radius about 26 times that of our Sun.

Our Sun has a radius about 109 times that of Earth.

So a quick bit of math: 109 x 26 = 2,834 times that of Earth

Um, well, you spell it the same way. G-A-L-A-X-Y .....I don't think that is what you were looking for though. LOL!

The cooling temperatures 360,000 years after the big bang.

young stars.

105,000,000,000.

No.

A Quasar is a Black hole in center of some Galaxies.

I think our Galaxy has one of them.

They do not have a distinct shape. So there is no parts.

A galaxy is a vast number of stars together with the interstellar medium and dark matter bound together by gravity.

No. It is a common misconception that the stars we see at night have burnt out by the time their light reaches us.

In truth, all stars visible to the naked eye are within a few hundred light years of us. So we see those stars as they were, at most, a few hundred years ago. Such a time period is not even a blink of an eye in the life of a star.

it is a another galaxy

There are four types of galaxies in the universe . A galaxy that has an undefined shaped is best classified as an irregular galaxy. 10% of galaxies are classified this way.