The obvious reason is that the specific star has bigger density compared with the Sun.
For example, that star could be a "white dwarf star". A white dwarf mostly contains "electron degenerate matter", which is very dense. A white dwarf is a small dense star.
Yes.
Because a white dwarf star is the core leftover from a bigger star and the core is the densest part of the star so although the star is smaller than the sun it has a similar mass as it is more dense
A protostar is the first building block of the main star. As it has not yet accumulated enough mass to join the main sequence, it will be smaller than the main star. The next stage will be a T Tauri star.
Yes, the neutron has a negative charge and a mass that is smaller than the mass of a proton.
The mass of a typical neutron star is believed to be between one and three times the mass of the sun. However, in size they would be much smaller than the earth, something on the order of around ten kilometers in diameter.
The mass of a star affects the lifespan of the star. The less the mass, the longer life span of the star. More massive stars burn up their fuel more quickly than the smaller stars. As the massive stars begin to burn the fuel and become smaller, the life span increases.
The greater the mass of a star, the more pressure there is on its center, and the more hotly nuclear fusion occurs. A hotter star consumes its fuel, hydrogen and helium, faster than smaller stars.
A star has more mass than a planet.
Yes.
Because a white dwarf star is the core leftover from a bigger star and the core is the densest part of the star so although the star is smaller than the sun it has a similar mass as it is more dense
The mass of a red dwarf can go down to about 0.075 times the mass of the Sun. Anything smaller than that would be a brown dwarf, which is no longer considered a star.
A protostar is the first building block of the main star. As it has not yet accumulated enough mass to join the main sequence, it will be smaller than the main star. The next stage will be a T Tauri star.
The sun is a star. For mass and size: Stars come in various sizes in masses and you will find smaller and bigger stars than our sun.
A neutron star is the remnant of a star, which - at the end of its life, and AFTER possibly losing a lot of mass (for instance, in a supernova explosion) has a remaining mass that is greater than the so-called Chandrasekhar limit.
This is not necessarily true. most of the time stars with a larger diameter have more mass but some stars with a smaller diameter are more dense and have a greater mass. Find a main sequence star chart and you can compare the data.
Much, MUCH smaller than the smallest star.
it can get smaller than an atom