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Is it possible that ALL of the stars we see no longer exist? No.
SOME of them? Sure. A FEW of the more distant stars could easily have already gone supernova, but the light of the explosion is still on its way here to Earth.
That even applies to some relatively nearby stars. The red supergiant star Betelgeuse, at the shoulder of Orion, is known to be very old for its type, and it will explode in a supernova explosion "Real Soon Now". However, "Real Soon Now" to an astronomer means any time within the next 100 centuries or so, so it probably hasn't happened yet.
But it COULD have exploded 500 years ago - but since it is about 850 light-years away, we wouldn't know it for another 350 years!
If the universe has allready collapsed and sucked away every single star except our sun (why??), then yes, we would not notice until 4 years from now when light stops coming from Alpha Centauri followed by the rest over the years.
What else can I help you with?
How does evidence that stars and groups of stars are moving away from each other relate to the big bang theory?
This movement has everything to do with the Bing Bang theory. The whole idea is that the Universe started with matter compressed into a very small space, and that from there, it expanded, and continues to expand to the present day.(Edit : Of course the expansion is measured at the level of galaxies. The movement of stars within galaxies is not connected to the expansion.)
What would've happened if the big bang never took place?
If the Big Bang never took place, the universe as we know it would not exist. The universe began as a singularity and expanded rapidly from that point. Without this event, there would be no galaxies, stars, planets, or life as we know it.
How long after the big bang did it take for stars to form?
the theory states that atoms formed during the big bang (like right as the big bang happened) Protons and neutrons were allowed to form about one second after the Big Bang. Electrons joined to nuclei to form permanent atomic bonds about 377,000 years later.
What caused the galaxies to cluster after the Big Bang?
Gravitation.
What force caused celestial bodies to orbit?
None, the universe came into existence in the Big Bang very slightly spinning and every part of the universe is spinning. When a cloud of matter collapses to form galaxies, stars, solar systems, planets, etc. the local rate of spin increases. This not only makes the bodies themselves spin but it makes planets orbit stars in solar systems, stars and solar systems orbit inside galaxies, galaxies orbiting clusters of galaxies, etc.
How do the planets revolving around a star get there speed?
It all started with the Big Bang. All the matter created from the Big Bang eventually formed planets and every thing else. From the moment matter was created during the Big Bang the matter was expanding and moving really fast. So eventually all the planets and stars and galaxies that were formed started to spin around each other from the velocity that was created.
Where did matter come from and how did it originate?
The origin of matter is believed to have started with the Big Bang, a cosmic event that occurred approximately 13.8 billion years ago. During the Big Bang, all matter and energy in the universe were created and began to expand and evolve into the galaxies, stars, and planets we see today.
Where are galaxies?
Galaxies were made by God from the beginning of time.Answer:The scientific opinion is that galaxies result from the gravitational attraction of matter into stars and the interactions of the stars to form clusters of swirling stars.. The matter originated in the "Big Bang" that was the beginning of the Universe some 15 billion years ago.
What does nuclear fission have to do with the stars being born?
The answer is portons and neutrons nonetheless join up together and make a bang then they are formed into galaxies and stars.
Where are galaxies made?
Galaxies were made by God from the beginning of time.Answer:The scientific opinion is that galaxies result from the gravitational attraction of matter into stars and the interactions of the stars to form clusters of swirling stars.. The matter originated in the "Big Bang" that was the beginning of the Universe some 15 billion years ago.
What theory explained that the universe started as a hot ball of materials which exploded and become stars and galaxies?
The " Big Bang "
What was created in the universe from the large explosion?
The Big Bang theory suggests that all matter, energy, space, and time were created during the initial explosion. This event led to the expansion of the universe, with particles forming and eventually evolving into stars, galaxies, and the vast cosmic structures we observe today.
How did stars become in space?
Look up the big bang, its about how the universe was created- but the big bang is the same way stars got, and are still getting created.
How was the galaxies and stars and planets made?
Most people believe that all started with a big bang and all the pieces fall out and some of them form galaxies. Nowadays the Universe is still expanding
What event occurred first the formation of the sun or galaxies?
The first stars appeared about 400 million years after the big bang. Galaxies would have formed around 2 billion years later.Our Sun was formed about 9.2 billion years after the big bang.
How does evidence that stars and groups of stars are moving away from each other relate to the big bang theory?
This movement has everything to do with the Bing Bang theory. The whole idea is that the Universe started with matter compressed into a very small space, and that from there, it expanded, and continues to expand to the present day.(Edit : Of course the expansion is measured at the level of galaxies. The movement of stars within galaxies is not connected to the expansion.)
Do distant galaxies have more heavy elements than nearby galaxies?
The distribution of metals (In astronomy, that is any element other that hydrogen and helium) is reliant of the population stars. (See related question) Metal rich stars, population I stars, are the latest "breed" of stars, whereas population III stars are the oldest and are classed as metal free stars. So the furthest galaxies are likely to be formed from the initial gases from the big bang and will be metal free stars,
