The Short Answer: A nebula is a giant cloud of dust and gas in space. Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form.
Moreover What is a nebula and what does it do? A nebula is an enormous cloud of dust and gas occupying the space between stars and acting as a nursery for new stars. The roots of the word come from Latin nebula, which means a u201cmist, vapor, fog, smoke, exhalation.u201d Nebulae are made up of dust, basic elements such as hydrogen and other ionized gases.
Is a nebula bigger than a galaxy? Simply put, the main difference between galaxies and nebulae are an extreme difference in size, as well as their basic structure. A nebula is a cloud of dust and gas, usually tens to hundreds of light years across. A galaxy is much larger u2014 usually thousands to hundreds of thousands of light years across.
Herein Is a nebula the death of a star? Another type of nebula, called a planetary nebula, results from the death of a star. When a star has burned through so much material that it can no longer sustain its own fusion reactions, the star’s gravity causes it to collapse. As the star collapses, its interior heats up.
Is Earth in a nebula?
The planet Earth is not part of any particularly named Nebula . Earth is part of the Solar System which is part of our home galaxy, the so-called “Milky Way”, which is part of the so-called Local Group , a collection of more than 50 other galaxies in the “neighborhood” of our own galaxy.
How is a black hole formed? Most black holes form from the remnants of a large star that dies in a supernova explosion. (Smaller stars become dense neutron stars, which are not massive enough to trap light.)
How is a star born? Stars are born within the clouds of dust and scattered throughout most galaxies. … Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction. As the cloud collapses, the material at the center begins to heat up.
Can life exist in a nebula? Possibly, but probably not. It is not known when life formed on Earth, but Earth was once part of a nebula, and it now has life. Most likely life got started on Earth after the solar nebula was essentially gone, but that is not known with certainty.
Is a star bigger than a nebula?
From largest to smallest they are: Universe, galaxy, solar system, star, planet, moon and asteroid.
Can a wormhole exist? Einstein’s theory of general relativity mathematically predicts the existence of wormholes, but none have been discovered to date. A negative mass wormhole might be spotted by the way its gravity affects light that passes by.
What is a white black hole?
Schwarzschild wormhole
A white hole is a black hole running backwards in time. Just as black holes swallow things irretrievably, so also do white holes spit them out. White holes cannot exist, since they violate the second law of thermodynamics.
Does time stop in a black hole? Near a black hole, the slowing of time is extreme. From the viewpoint of an observer outside the black hole, time stops. … Inside the black hole, the flow of time itself draws falling objects into the center of the black hole. No force in the universe can stop this fall, any more than we can stop the flow of time.
How old is the universe?
Using data from the Planck space observatory, they found the universe to be approximately 13.8 billion years old.
Why is a red giant so named?
A red giant is a large non-main sequence star of stellar classification K or M; so-named because of the reddish appearance of the cooler giant stars. As Earth’s sun is of one solar mass, it is expected to become a red giant in about six billion years.
What will happen if the Sun dies? After the Sun exhausts the hydrogen in its core, it will balloon into a red giant, consuming Venus and Mercury. Earth will become a scorched, lifeless rock — stripped of its atmosphere, its oceans boiled off. … While the Sun won’t become a red giant for another 5 billion years, a lot can happen in that time.
Can life exist without a planet? But not only is an Earth-like world not necessarily required for life to exist, recent evidence shows us that having a world at all might not be needed. It may be possible to have life in the depths of interstellar space itself. … As far as we know, life only has a few key requirements.
What if Earth was inside of a nebula?
Can planets be in nebula? The answer would be yes. As the planet orbits its star that orbits the center of the galaxy, the planet and its star could enter a nebula and pass through that nebula for thousands or millions of years and then emerge on the other side of the nebula.
Is Milky Way a nebula?
Contained in the Milky Way are stars, clouds of dust and gas called nebulae, planets, and asteroids. Stars, dust, and gas fan out from the center of the Galaxy in long spiraling arms. The Milky Way is approximately 100,000 light-years in diameter.
Is our solar system in a nebula? Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. … When this dust cloud collapsed, it formed a solar nebula – a spinning, swirling disk of material. At the center, gravity pulled more and more material in.
What is the difference between a galaxy and a universe?
The universe refers to the totality of all that exists, the cosmos. The universe is flat and is composed of 4.6% atoms, 24% cold dark matter, and 71.4% dark energy. A galaxy is a large collection of stars, gas, and dust kept together by gravity. Galaxies come in all sorts of different shapes and sizes.
What’s in a black hole? A black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. … A stellar-mass black hole forms when a star with more than 20 solar masses exhausts the nuclear fuel in its core and collapses under its own weight.
What happens if you fall into a white hole?
Objects inside a white hole can leave and interact with the outside world, but since nothing can get in, the interior is cut off cut off from the universe’s past: No outside event will ever affect the inside.
What creates a white hole? Black holes are created when stars, much more massive than our Sun, die catastrophically in a supernova. … White holes are created when astrophysicists mathematically explore the environment around black holes, but pretend there’s no mass within the event horizon.
What would happen if a black hole collided with a white hole?
The mass the white hole is expelling is also being turned into energy for the black hole. … So if a white hole and black hole collided, we’d have a massive black hole roaming around the Universe, destroying everything in its path.
Is there an opposite of a black hole? White holes, which are theoretically the exact opposites of black holes, could constitute a major portion of the mysterious dark matter that’s thought to make up most of the matter in the universe, a new study finds. And some of these bizarre white holes may even predate the Big Bang, the researchers said.
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