A star like object that is very bright and distant?

Answer 1

Stars glow for the same reason that the sun glows. They are gigantic balls of flaming gases. The reason the stars look so small, is the incredible distance between earth and the stars. (The light that we see from the stars can be millions of years old because it took that long for the light to travel this far!)

Answer 2

If the star's parallax is small, the distance is large, and vice-versa. The distance in parsecs is the reciprocal of the parallax.

If the star's parallax is small, the distance is large, and vice-versa. The distance in parsecs is the reciprocal of the parallax.

If the star's parallax is small, the distance is large, and vice-versa. The distance in parsecs is the reciprocal of the parallax.

If the star's parallax is small, the distance is large, and vice-versa. The distance in parsecs is the reciprocal of the parallax.

Answer 3

A cooler star could actually appear brighter than a hotter star because in is not just about the temperature is also depends which one is closer or further away from Earth. Therefore if a cooler star was closer to Earth than a hotter star then the cooler one would appear brighter.

Answer 4

If this is a homework question the answer you are probably looking for is Quasar [See related question]

However, the actual question is full of inconsistencies.

Brightness is defined as being observed from Earth and distance is relative to your frame of reference - Apparent magnitude [See related question - Apparent magnitude]

Therefore, a bright object could be the Sun, and in normal relative terms it is distant, to some very distant.

A quasar on the other hand is not very bright from Earth but it is very very distant.

For the question to fit the answer, the question should be "What star like object is very luminous and very far away".

or "What star like object has a high absolute magnitude and is very distant [See related question - Absolute magnitude]

Answer 5

One star may appear brighter than another for three basic reasons.

1. It IS brighter. Some stars are bigger and brighter than others.

2. It's closer. If two stars are identical, the closer one will look brighter.

3. There's something in the way. Some stars are behind gas and dust clouds, and just like clouds in the sky, a dust cloud in space can block part of the light from a distant star.

Answer 6

The largest known stars (although not the most massive) are the Red supergiants. The largest known red super giant in the Galaxy is a hyper giant called VY Canis Majoris, which radius is around 1500-2000 times that of our sun. If this largest known star were in our solar system, then its surface would extend out further than Jupiter's orbit, maybe even approaching Saturn's orbit.

Answer 7

Because, if I remember correctly, the heat of the star has nothing to do with it's brightness. It's gas components, or components in general create the star's brightness.

Hope this helps!

Ciiara

Answer 8

Stars emit light because they are hot - with typical surface temperatures of a few thousand kelvin. And they are hot because they convert energy in their cores, in a process called nuclear fusion.

Answer 9

Among the most distant known objects are quasars or active galactic nuclei, because they are also the most highly luminous objects and can be seen over vast distances. Their luminosity has been compared to the entire output of our galaxy of hundreds of billions of stars. The most distant galaxies are around 13 billion light years away.

In 2009 a gamma ray burst was detected whose distance was further than even the furthest known galaxies. The event was thought to have occurred in the early universe and to be associated with the formation of a black hole.

Answer 10

A quasar might look like a star, if you don't look too closely.