Galaxies

The term "galaxy" typically refers to a large system of stars, gas, and dust, while a "solar system" refers specifically to our own system, with the Sun and its planets. There are no small galaxies within our solar system since galaxies are much larger in scale compared to solar systems.

No, the center of our solar system is the Sun. A galaxy is a large system of stars, gas, dust, and dark matter held together by gravity, and contains billions of stars, such as the Milky Way galaxy where our solar system resides.

Astronomers have discovered exoplanets orbiting stars by measuring the small gravitational wobbles in the motion of the stars. These wobbles indicate the presence of an orbiting planet pulling on the star with its gravity, causing it to move slightly. This method, known as the radial velocity technique, has been crucial in detecting numerous exoplanets outside our solar system.

Earth is important because it is the only known planet with conditions suitable for supporting life. Its atmosphere, moderate temperature, and presence of water allow for the diverse ecosystems and habitats that sustain life as we know it. Additionally, Earth's position in the solar system has influenced the development and evolution of life on our planet.

An irregular galaxy is a galaxy with no definite shape like spirals, lenticulars, and ellipticals.

The core of the Sun is considered to extend from the center to about 0.2 to 0.25 solar radius. It is the hottest part of the Sun and of the Solar System. It has a density of up to 150,000 kg/m³ (150 times the density of liquid water) and a temperature of close to 15,000,000 kelvin (by contrast, the surface of the Sun is close to 6,000 kelvin). The core is made of hot, dense gas in the plasmic state. The core, inside 0.24 solar radius, generates 99% of the fusion power of the Sun.

If the Milky Way were a quasar, it would be incredibly bright and emit vast amounts of energy due to the supermassive black hole at its center consuming huge amounts of matter. The high energy output would impact the surrounding galaxies and alter the dynamics of the entire universe.

The closest irregular galaxy to us is the Large Magellanic Cloud, which is located around 163,000 light-years away from Earth. It is a satellite galaxy of the Milky Way and can be seen with the naked eye from the southern hemisphere.

Likely the two galaxies would become one. Though there is some speculation in all likelyhood some stars would be lost in the process.

Incedentally in 3-5 billion years the galaxy Andromeda may collide with the milky way and it is about that size (a little smaller). In all likelyhood whan that happens our star will probably be lost fly out into the universe or into another dwarf galaxy.

Whatever happens the two galaxies would take a different course through the universe depending on how much mass the colliding galaxy has. (if it is Andromeda it is likely that we will continue on the course that we are on now)

Any planet that orbits a star ( our sun for example ) has an orbital trajectory. This is due to gravity and the centripetal force. An elliptical trajectory is when that planet orbits the star in an ellipse rather than a circle. Ellipse = squashed circle.

Well so you know how the earth revolves around the sun. and how other planets revolve around the sun? Well that all forms a galaxy and the scientists decided to name it the milky way, so all in all the sun is located in the Milky Way.

The Sun itself is also in orbit around the center of the Milky Way. Located in the outer Orion arm, the Sun is moving in the same general direction as the arm itself.

We can do a quick calculation using Newtonian gravity (which is sufficient here since we are far away from the black hole). We do need some data:

-The distance between the Sun and the centre of our Galaxy is 2.5 x 10^20 meters. Since the distance between the Earth and Sun is completely negligible at this scale we can use this as the distance between the Earth and the black hole.

-The mass of the Earth is about 6 x 10^24 kilograms.

-The mass of the central black hole is about 8 x 10^36 kilograms.

We can now use the following formula:

F = G * m_earth * m_black_hole / distance^2

Where G is some constant named the gravitational constant. If we use this formula we arise at a force of about 7.7 x 10^20 Newtons. This is the force the black hole exerts on the Earth, and it is also the force the Earth exerts on the black hole.

To catch a Rainburn in Monster Galaxy, you need to explore the Coral Cave region. Rainburns can be found in the wild here and captured using your capture disc just like any other monster. Keep exploring the area until you encounter one and then try to capture it. Good luck!

We can calculate the mass of the Milky Way by analyzing our solar system's orbit around the center of the Milky Way. The only problem is, that orbit takes about 220 million years to complete, and human beings have been observing it for less than 200. So our calculations could be - probably are! - way off.

Large telescopes are used to study distant galaxies because they can gather more light, allowing for better resolution and the ability to detect fainter objects. Their larger size also grants them a greater light-gathering capacity, which is essential for observing objects that are billions of light-years away. Additionally, large telescopes offer higher sensitivity and better data collection capabilities, enabling astronomers to analyze and study distant galaxies in greater detail.

The fusion of hydrogen atoms into helium in a contracting cloud produces nuclear energy in the form of heat and light. This process releases a tremendous amount of energy, which powers the brightness of stars like the sun.

The milky way galaxy is roughly a disc shape the is around 1000 lightyears thick on average and 100,000 lightyears in diameter. Our solar system sits roughly 26,500 light years from the centre.

Very lens-shaped elliptical galaxies have a high amount of reddish stars. Hence both their shape (the "spiral arms" have pulled inward over time) and the color of the stars implies they are very old galaxies. Spherical galaxies - I'm not up enough on that topic, so I will leave that part of the answer to another.

A blue star has much greater mass and thus the temperatures in the core are much greater. This means it will use up it's supply of hydrogen much faster than our Sun.

Fairly averagely- it's a spiral galaxy of the larger sort, revolving slowly anticlockwise and of medium age as galaxies go. Our neighbouring galaxies are somewhat closer together in distance to each other than is usual, not exactly forming a cluster but making 'near neighbours' in galactic terms. There are many galaxies in the Universe that are far larger and older than our own Milky way, but also many others that are younger and smaller. Generally speaking, the younger galaxies tend to be in closer proximity to each other than older ones.

What is really amazing, is that there are AT LEAST as many galaxies in the Universe as there are stars in our own galaxy- that's hundreds of millions!! Pretty cosmic stuff, eh?!

The galaxies move farther and farther apart as time stretches across the empty void which is our universe.

Astronomers can determine Earth's position within the Milky Way by studying the distribution of stars, gases, and dust in the galaxy. By understanding the structure of the Milky Way and analyzing the position of objects in the sky relative to Earth, astronomers can create accurate visualizations of our location in the galaxy, even though these images are not taken from a point outside of our solar system.

Older stars are generally towards the centre of a galaxy as they will be the first to accumulate around the galactic centre.

Because they are older, there is less "free" hydrogen, so new star formation will occur wherever, there is enough matter to form a new star. This generally is around the outer edges of a galaxy.

The universe is actually about 15 billion years old.

I'm not sure where you got the statistic that the Hubble Space Telescope can see 20 billion light years into space; I think you're off by a factor of three or so.