Thread: Some questions and our Universe

Hi Guys! I have some questions about the universe, i hope so much that you can help me.

There were meteors, after formation of the early stage stars and galaxies? And before the formation of the solar system and the earth?

And, Were there during the formation of galaxies kind of breaches or holes in the universe and has closed with one another?

Thanks very much in advance

Originally Posted by AstroMan

Hi Guys! I have some questions about the universe, i hope so much that you can help me.

There were meteors, after formation of the early stage stars and galaxies? And before the formation of the solar system and the earth?

And, Were there during the formation of galaxies kind of breaches or holes in the universe and has closed with one another?

Thanks very much in advance

A meteoroid is only a meteor when it enters an atmosphere. Also the formation of meteoroids and asteroids is a process that happens during star formation.

The visible streak of light from space debris is the result of heat as it enters a planet's atmosphere, and the trail of glowing particles that it sheds in its wake is called a meteor, or colloquially a "shooting star" or "falling star".

A meteorite is a solid piece of debris, from such sources as asteroids or comets, that originates in outer space and survives its impact with the Earth's surface. It is called a meteoroid before its impact. A meteorite's size can range from small to extremely large. When a meteoroid enters the atmosphere, friction, pressure, and chemical interactions with the atmospheric gases cause it to heat up and radiate that energy, thus forming a fireball, also known as a meteor or shooting/falling star.

Originally Posted by AstroMan

Hi Guys! I have some questions about the universe, i hope so much that you can help me.

Hi Astroman and welcome to the forum.

Think of the universe as a dynamically unfolding and expanding huge 'springy' container with lots of stuff (it's contents) all moving and being guided by the properties of spacetime itself (the springy medium of the container). Some of the stuff has internal properties such as mass and charge that can influence other stuff including the properties of spacetime itself, and these effects are perceived as forces. The spacetime arena where this occurs 'this springy context' has it's own properties that guides how this stuff moves without the need for forced movement. So you have this universe seething with motion and spacetime undulating with this motion.

Commence with a universe in this state and then observe how the spacetime properties act to differentiate this stuff over time into defined locales through curvature of the springy medium despite overall expansion still taking place.....this curvature is gravity taking a hold. Note in your mind how this movement changes over time as the curvature in local regions cause moving stuff to coalesce in these distinct regions despite an over-riding expansion still occurring in the universe. Now this stuff condenses from dust clouds to planet sized objects to ultimately objects where the local gravitation (curvature) get's so intense that stuff is fused and internal forces of the stuff reveal their intensity (eg. a stars fusion). Light is released (electromagnetic radiation) from this effect allowing the energy to dissipate towards equilibrium.

Why the expansion of this springy stuff? Spacetime itself is endowed with energy referred to as the vacuum energy. Also the stuff (eg. particles and objects) contains bound energy in a constant state of dynamic flux. As with any system, the energy wants to dissipate towards equilibrium (like the gas in a room) and this provides a basis to understand expansion. As energy is released from constraints, it is added to the unconstained regions of the universe to reach an equilibrium state where ultimately all this motion theoretically should cease.

Now you have a context to start looking at your meteors. You have spacetime regions that are constrained and spacetime regions that are relatively unconstrained. You have meteors (stuff) travelling through this context following the easiest route and being affected by curvature and periodically being affected by collisions etc. that add to this complex motion.

Over time, some locales reach an equilibrium point themselves in the grand order of things where motion settles down into defined patterns around gravitational sources (areas of high mass-energy distribution) and these are observed as galaxies, solar systems etc. Things that give apparrent structure to the universe.

Our solar system is in effect in a state of near equilibrium periodically being disrupted by objects entering the system of their path through the universe.

Now a meteor travelling through space can become bound in higher gravitational regions or alternatively it can be swung like a slingshot along this curvature picking up acceleration along the way, or it can be buffeted or destroyed through collisions.

Rather than talking in terms of breaches and holes in the universe, the description above reflects how the interplay between stuff and spacetime of a single universe can explain this complex notion. :-))

PS It is more akin to a flowing river that begins upstream with lots of semi-permanent structures such as whirlpools, cascades and eddies as it makes it's way through time to a tranquil sea than to say a gigantic 'static' lego universe that gets progressively pieced together of permanent structures. There is you and those meteors that represent semi-permanent pattern in that flowing stream that try and relate how those moving structures relate to each other over time in this moving stream.

I am very grateful, really thank you so much guys