A nebula (Latin for ‘cloud’ or ‘fog’; pl. nebulae, nebulæ or nebulas) is a distinct body of interstellar clouds (which can consist of cosmic dust, hydrogen, helium, molecular clouds; possibly as ionized gases). … Most nebulae are of vast size; some are hundreds of light-years in diameter.
Where is the Virgo supercluster located in the universe? The Virgo Supercluster, centered on the Virgo Cluster of galaxies about 65 million light-years away, contains smaller groups and clusters of galaxies, including the Local Group.
Also, What is a dying star called? Some types of stars expire with titanic explosions, called supernovae. When a star like the Sun dies, it casts its outer layers into space, leaving its hot, dense core to cool over the eons. … A supernova can shine as brightly as an entire galaxy of billions of “normal” stars.
Is Earth in a nebula?
The Earth was formed from the nebula that produced the Solar System. It is almost universally accepted that the Sun, the planets and their satellites, the asteroids, and the comets of the Oort ‘cloud’ grew from a cloud of gas and dust that contracted under its own gravity.
22 Related Questions and Answers
What is space dust called?
Cosmic dust, also called extraterrestrial dust or space dust, is dust which exists in outer space, or has fallen on Earth. … A smaller fraction of dust in space is “stardust” consisting of larger refractory minerals that condensed as matter left by stars.
What is our galactic supercluster?
The Laniakea Supercluster is the supercluster that contains the Virgo Cluster, Local Group, and by extension on the latter, our galaxy; the Milky Way.
Which is bigger Local Group or supercluster?
It’s somewhere between the Milky Way and the Andromeda Galaxy. The Local Group has a diameter of about 10 million light-years. … Its diameter is thought to be about 110 million light-years. The Virgo Supercluster may be part of an even-larger structure that astronomers call the Laniakea Supercluster.
What is the Virgo Supercluster NASA?
The giant, 2000-galaxy, Virgo Cluster is about 65 million light years away. It is the proximity of some 50 nearby small groups of galaxies to the Virgo cluster that suggests that they all form an enormous flattened cluster of clusters; we call it the Local Supercluster.
What would happen if the sun exploded?
The Sun will get hotter and brighter, and it will start to expand. During this process, it will lose its outer layers to the cosmos, leading to the creation of other stars and planets in the same way that the violent burst of the Big Bang created Earth.
What happens to stars when they explode?
Some stars burn out instead of fading. These stars end their evolutions in massive cosmic explosions known as supernovae. When supernovae explode, they jettison matter into space at some 9,000 to 25,000 miles (15,000 to 40,000 kilometers) per second.
Why do scientists believe the universe is still expanding?
Scientists believe the universe is still expanding outward. They believe this outward expansion is the result of a violent, powerful explosion that occurred about 13.7 billion years ago. … By looking at an object’s electromagnetic spectrum, scientists can determine if an object is moving away from Earth or towards Earth.
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.
How many galaxies are there?
All in all, Hubble reveals an estimated 100 billion galaxies in the universe or so, but this number is likely to increase to about 200 billion as telescope technology in space improves, Livio told Space.com.
Do nebula turn into galaxies?
A nebula is a cloud of dust and gas, usually tens to hundreds of light years across. A galaxy is much larger — usually thousands to hundreds of thousands of light years across. Nebulae are one of the many things that galaxies are made of, along with stars, black holes, cosmic dust, dark matter and much more.
How much of the human body is stardust?
Human body contains 97 percent stardust like stars. Houston: Ninety-seven per cent of the human body consists of stardust, claim scientists who have measured the distribution of essential elements of life in over 150,000 stars in the Milky Way galaxy.
How was Earth created?
When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a rocky mantle, and a solid crust.
How old is the universe?
Using data from the Planck space observatory, they found the universe to be approximately 13.8 billion years old.
Can we see supercluster?
Because of its structure, the Perseus-Pices Supercluster is perhaps the most obvious supercluster in the sky. It also lies near what is perhaps the most obvious void in the sky, called the Taurus Void.
Is laniakea real?
We call this supercluster “Laniakea,” the Hawaiian word for immense heaven. It links up our own massive cluster, Centaurus, the Great Attractor and many others, and contains over 100,000 galaxies total. … But there’s a problem with not only Laniakea, but with the idea of a supercluster in general: it isn’t real.
Are galaxy superclusters real?
Superclusters have been found and charted throughout our observable Universe, where they’re more than ten times as rich as the largest known clusters of galaxies. Unfortunately, owing to the presence of dark energy in the Universe, these superclusters — including our own — are only apparent structures.
What is the Virgo supercluster made of?
The Virgo Supercluster (Virgo SC) or the Local Supercluster (LSC or LS) is a mass concentration of galaxies containing the Virgo Cluster and Local Group, which in turn contains the Milky Way and Andromeda galaxies.
What are the 3 largest galaxies?
The three largest members of the group are the Andromeda galaxy (biggest), our Milky Way (second-biggest) and the Triangulum galaxy. The other 50 or so galaxies in the Local Group are dwarf galaxies. And they’re mostly clustered around the three larger galaxies.
Where is the Great Attractor?
The Great Attractor is “an apparent gravitational anomaly in intergalactic space at the center of the local Laniakea Supercluster,” in which the Milky Way is located.
