Neutron Stars

Stars do not make an audible sound seeing how the vacuum of space would not transmit any sound that could be detected by the human ear. Star do however release massive amounts of radiation and radio waves that can be picked up by different sorts of recording devices and turned into audible sound. There are "music" files online astronomers have compiled concocted of different stars and their variable pitches.

No. They do not have enough mass to become black holes. Depending on the mass they will either become white dwarfs or neutron stars.

A neutron star that "blinks on and off" is called a pulsar. They don't really blink, but there is a jet or jets of energy that come off some of these stars. Think of a light house. You see the beam "blink" but it's just that the beam crosses your line of sight.

Let me see. Although theoretical, neutron stars do not retain the same plasma like properties of regular stars (which are nuclear powerhouses composed of plasma through a critical balancing act of fusion and gravity).

Neutron stars are almost entirely made up of highly compacted neutrons and typically have a solar mass of 1.35 to 2.1. The surface of a neutron star is composed of ordinary atomic nuclei crushed into a solid lattice with a sea of electrons dlowing through the gaps between them.

The surface is known to be a fluid which has been theorized to be a phenomena known as "super fluid" or a fluid which has no flow or viscosity. below the atmosphere is known to be an extremely hard yet smooth crust due to its gravitational field. It has also been discussed that the core of the neutron star also contains super fluid and has been theorized to contain a matter known as crystal carbonite.

The neutron star hasn't atoms.

Some spin up to hundreds of times a second.

AT LEAST ONE OF THEM HAS BEEN MEASURED TO SPIN 700 HUNDRED TIMES PER SECOND, AND OTHERS THAT MAY EVEN SPIN FASTER.

The name "neutron star" some from the fact that the neutron star is mainly composed of neutrons. The gravitational pull of a neutron star is so strong that most matter are crushed into neutrons.

I've seen that figure of 4 times the Sun's mass, but the usual number given is at least 8 times the Sun's mass. Anyway here's the answer:

The general idea is that, depending on how much mass is left once the star runs out of fuel, it may become a white dwarf, a neutron star, or a black hole.

A star like the Sun goes through a "red giant" star stage then becomes white dwarf star.

Stars that are much more massive than the Sun go through a "supergiant" stage. They finally run out of fuel. The core of the star is now mainly iron.

If, after running out of fuel, the amount of mass left in the core is more than a certain limit - the Chandrasekhar limit, currently believed to be about 1.39 times the mass of the Sun - the core's "electron degeneracy" pressure is not enough to resist the gravitational force on the core. In this case, the core of the star collapses into a neutron star or black hole and causes a supernova explosion.

Nothing known is denser than the densest of neutron stars except a gravitational singularity (Black hole). The upper limit of the inward pressure a neutron star can handle before further implosion is dictated by neutron degeneracy pressure.

However, theoretically (Not yet observed but probably out there) the next step would be a quark star, that is, a star that is held from implosion by quark degeneracy pressure. Then the next stage would be a black hole.

Technically there is yet another stage in between a qaurk star and a singularity called preon degeneracy prssure but the preon models are too flawed to even consider.

No, neurons are cells which are found in brains - nothing to do with stars.

Galaxies are by far the largest. Galaxies contain millions to trillions of stars, each orbiting the galaxy's centre of mass. Our own Milky Way is an example of a galaxy, of which our sun is just one of 200 to 400 billion other stars. The Milky Way is estimated to be in the region of 100,000 to 120,000 light years across.

Nebulae (the plural of nebula) are gas regions where stars are often formed. They exist within galaxies and are therefore much smaller. The famous Orion Nebula is estimated to be 24 light years across, while the larger Carina Nebula is in the region of 100 light years across. Both exist within the Milky Way.

A globular star, or globular cluster, is a cluster of stars. There are around 150 to 158 such clusters known to exist in the Milky Way, with perhaps 20 more yet to be discovered.

A neutron star is a stellar remnant, the result of a supernova (exploding star). They are much smaller than the original star would have been, but are incredibly dense and often rotate very rapidly, emitting electromagnetic radiation as pulsars.

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Two cubic meters of neutron star would have a mass of about 10^18 (1 quintillion) kilograms or about 1 quadrillion metric tons.

Both white dwarfs and neutron stars are extremely dense remnants of the collapsed cores of dead stars.

You would not even get as far as eating it. A teaspoon of neutron star would weigh roughly 2.3 billion metric tons, enough to have a noticeable gravitational pull at close range. By the time you got within arm's length of it, you would be subjected to gravity 40 times that of Earth. At a distance of 1 inch, any part of your body would be subjected to a force 24,000 times that of Earth's gravity. In other words, it would kill you before you could even get it in your mouth.

Neutron stars are composed (mostly) of neutrons because during the star's life, the fusion processes strip apart atoms, leaving the electrons behind inside the star's core. When the star runs out of fuel and fuses up the atomic chain and hits nickel, it collapses. The pressure from the collapse is enough to force all those electrons together and as you compress them more and more, the free protons from the fusion processes bond with the electrons, forming neutrons.

Put simply, it's mostly neutrons because it's just doesn't have enough mass to be made of mostly quarks or become a singularity.

From approximately 1.5 to 2.0 solar masses

snow FAR

pulsars

Yes, we have found evidence of planets orbiting neutron stars. A planet similar to Earth in size and mass could exist around a neutron star, but beyond that it would not be very Earthlike. Such planets probably form from the remains of the supernova.

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