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Well, it may not always be possible to do this in every case, but there are certain things to look for.
Often a supernova will leave some relic behind, such as a pulsar or black hole, so you can look and see if there is one of these phenomena present.
Also (as in the case of the Crab Nebula) we know that there was a supernova some time in the past and we can see the result with our eyes. In this case we have a pulsar at the centre as well!
After a long time, if there are any gases present from the explosion, these may dissipate owing to the object's galactic motion or gravitational effects from passing stars (really the same thing!) so the Crab Nebula may not look quite so crablike in a few million years' time.
What else can I help you with?
Make a sentence for astronomy?
An asteroid is a bunch of rocks moving through out solar system
What is the magnitude of Cassiopeia A?
The magnitude of Cassiopeia A, a supernova remnant, varies depending on the wavelength observed. In visible light, its magnitude is around 12.2, making it too faint to be seen with the naked eye. At radio wavelengths, it is much brighter due to synchrotron radiation emitted by high-energy electrons.
How far is the crab nebula?
The crab nebula is estimated to be about 6,300 light year away.
What is a region in space which is left behind after a major star dies?
A region left behind after a major star dies is called a supernova remnant. Supernova remnants are expanding shells of gas and dust that result from the explosive death of a massive star in a supernova event. They play a crucial role in enriching the interstellar medium with heavy elements and triggering new star formation.
What is the difference between a planetary nebula and a supernova remnant?
A planetary nebula is formed when a medium-sized star, like our Sun, exhausts its nuclear fuel and sheds its outer layers, leaving behind a hot core that ionizes the ejected gas, creating a glowing shell. In contrast, a supernova remnant results from the explosive death of a massive star, which leads to a supernova explosion that disperses the star's material at high velocities. While both involve the ejection of stellar material, planetary nebulae are generally less energetic and arise from less massive stars, whereas supernova remnants are the remnants of more massive stars and exhibit more complex dynamics and higher energy outputs.
Can a pulsar change into a supernova?
No. A pulsar is a remnant left behind by a supernova.
What Remnant can stretch over a distance of several light-years?
A supernova remnant.
Why is the Crab Nebula considered a supernova remnant?
Because it IS a supernova remnant. It's the visial remains of a star that expolded and was seen in 1054. Designated SN 1054.
How big is supernova cassiopeia?
Currently the expanding cloud from the supernova remnant is about 10 light years across.
What might happened to a star after it explodes as a supernova?
The supernova remnant will either be a neutron star or a black hole.
What is the name for a supernova cloud?
Nebula. Some nebulae are formed as the result of supernova explosions. The material thrown off from the supernova explosion is ionized by the supernova remnant. One of the best examples of this is the Crab Nebula, in Taurus. It is the result of a recorded supernova, SN 1054, in the year 1054 and at the centre of the nebula is a neutron star, created during the explosion.
Is a black hole a supernova remnant?
No, a black hole is not typically a supernova remnant. A black hole is formed when a massive star collapses under its own gravity, creating a region of spacetime from which nothing, not even light, can escape. On the other hand, a supernova remnant is the leftover material from a massive star's explosion in a supernova event.
Was the first neutron star observed in a supernova remnant?
Yes, the first neutron star was observed in a supernova remnant. The object, named PSR B1919+21, was discovered in 1967 in the Crab Nebula, the remnant of a supernova that exploded in the year 1054 AD.
What determines what stage comes after a supernova?
The amount of mass in the remnant. If the mass of the remnant exceeds 3 solar masses then it will become a black hole.
What is the Vela Supernova?
The Vela Supernova is the remnant of a supernova explosion that occurred in the Vela constellation about 11,000 to 12,300 years ago. It is located about 800 light-years away from Earth and is one of the closest known supernova remnants to us.
What remnant does a supernova leave?
Depending on the mass of the original star, it is either a black hole or a neutron star.
A spinning neutron star has been observed at the center of a?
neutron star has been observed at the center of a supernova remnant, known as the Crab Nebula. This neutron star, also called a pulsar, spins rapidly, emitting beams of radiation that are observed as pulses by astronomers.
