2007-08-01 01:59:56 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Physics
In galaxy no.
2007-08-01 02:02:30 · answer #1 · answered by Anonymous · 5⤊ 0⤋
The Sun is stationary only relative to the Earth and the planets in the solar system. On the basis of the Galileo principle of relativity the Sun is at rest(stationary) relative to the earth.So if the solar system was observed from the top view( a Star) and the Sun was not moving we would observe the motion of the Earth as an elipse.
However in reality the Sun is not stationary =Its actually moving at a velocity of 250 km/seconds relative to the Barrycenter of the Milky Way. Therefore the real motion of the Earth relative to the Galaxy is not an elipse,but rather a cycloidal motion.
Hence the motion that appears in one frame of reference does not appear the same way as observed in a different frame of reference in a gravity field.Therefore it is postulated that not all frames of reference are equivalent when observing motion in a Gravity Field.
2007-08-01 02:42:47 · answer #2 · answered by goring 6 · 1⤊ 1⤋
In our single star solar system, the sun is stationary.
In binary star systems, both stars revolve around a common point.
In quad star systems, you have 2 pairs of stars. Each pair behaves like the pair in a binary star system, but each pair rotates around the mass centre of the set of 4 stars. There's probably a better way to describe that..oh yeah, a diagram!
But yes, as other users have said, our solar system is about 30-35,000 lightyears from the galactic centre and is part of a spiral arm that rotates. Our galaxy is in motion, our local group is in motion, our supercluster is in motion.
Yep, lots of movement. Its only stationary relative to its planets.
2007-08-01 02:12:56 · answer #3 · answered by rogavit 3 · 2⤊ 0⤋
Even if you ignore the fact that the sun is rotating around the centre of the galaxy, and the galaxy is orbiting round in a big cluster of galaxies, and so on, it still isn't true that the sun is stationary.
Gravity from the giant planets interferes with the sun and causes it to wobble about a central point.
Try imagining two planets of the same mass orbiting around each other. You obviously couldn't say that one was still and the other rotating around it, but you would say that they were both orbiting around a point exactly half way in between them. Now if you imagine that one of these planets gets bigger and bigger the point about which they rotate would get closer and closer to the bigger planet, but would never quite reach it's centre.
The same is true of the sun and Jupiter. Rather than jupiter orbiting around the sun, they are both orbiting around a point somewhere in between them - although, admittedly, that point is much closer to the sun than Jupiter!
2007-08-01 02:12:42 · answer #4 · answered by pseudospin 2 · 1⤊ 1⤋
although the sun seems to be stationary relative to the earth, it always rotates around the center of the galaxy.
2007-08-01 03:02:06 · answer #5 · answered by Emperor 3 · 2⤊ 0⤋
The Sun is rotating about its axis. It is also revolving around the centre of the galaxy, as is every other star in the Milky Way. The galaxy is moving through space.
2007-08-01 02:04:06 · answer #6 · answered by gudspeling 7 · 2⤊ 0⤋
relative to the earth it is considered to be a stationary star, around which the planets orbit.
however, all stars and planets are in motion relative to each other and our entire galaxy is moving when compared to neighbouring galaxies.
the whole universe as we know it is constantly in motion.
2007-08-01 02:06:13 · answer #7 · answered by TOM C 1 · 2⤊ 0⤋
No by its own forces and energy.. at the vacum of space. I love to see, learn the sub atomic waves.
2007-08-01 02:06:50 · answer #8 · answered by daryl 4 · 2⤊ 0⤋