do the sun rotates around itself like earth ???and how long it takes to finish one round??

Question

do the stars(the sun) rotate and spin around their axis like planets (earth)???

Answer 1

The Sun rotates, but not quite like Earth.

One rotation takes almost 26 days at the equator. However, the rate is not the same at all latitudes (the sun is not a solid ball).

Rotation can be calculated by observing sun spots.

Most stars also rotate. They each have their own rate. Rotation rates are detected by spectroscopic doppler shift: the surface of the star on one side is approaching us and the other side is moving away from us. This affects the way the star's spectrum looks.

Vega was thought for a long time to be very slow. It was recently discovered that it is really rotating very fast but we are seeing it "pole on" (i.e., we are in line with its axis of rotation). Because of that, the spectrum effect was not detectable.

PS:
sidereal (in relation to fixed stars): 25.38 days at the equator.

However, in those 25 days, the Earth has proceded along its orbit, so the sun has to rotate a bit more so that the same spot catches up to us.
Synodic (in relation to Earth): 27.2753

Answer 2

You can actually plot the rotation of the sun yourself, if there are any sunspots at the time you want to view.

Never look at the sun directly, but it is easy to project an image of the sun onto a card, preferably a black card.

You only need a cheap telescope, nothing fancy (has to be a regular telescope, not a reflector), and it has to be on a mount.

Without looking down the telescope, line it up as best you can to point at the sun. Put the card on some sort of stand (a chair will do) a few inches behind the eyepiece.

Then wiggle the telescope around until you catch an image of the sun on the card. It takes a bit of fiddling around, but you will eventually see the image on the card.

Focus the telescope, and move the card further away for bigger image.

If there are no sunspots, you won't see much more than a big yellow ball. But if there are sunspots, you will be amazed how clear they are.

If you draw around the sun on your card and mark where the spot is, you can then do it again next day and see that the spot has moved somewhat. It will move across the face of the sun in less than 2 weeks (half a revolution).

Also, you can measure a sunspot (good school project). When you draw around the sun on your card (or just mark the width), mark the width of the spot also.

Take the card away, and measure the sun and the sunspot - its an easier sum if you use millimetres.

Then divide the sunspot size by the sun size and multiply by 860,000 to get miles, or 1,500,000 to get kilometres.

eg sun 100mm, spot 2 mm

size of spot = 2 divided by 100 x 1,500,000

= 30,000 kilometres

You'll note that even a spot that looks that small, is over twice as wide as the Earth.

Good luck.

Answer 3

The earth takes 365 days to rotate around the sun. The earth also spins on its axis 24 hours per day. The sun should spin on its axis too, but you will have to research on the Internet or the old fashion way in a encyclopedia.

Answer 4

The Earth rotates on its axis, spinning, and revolves about the solar, vacationing an elliptical direction like a blue rubber ball on a string being whirled round a better blazing warm yellow huge ball, as the different planets of numerous length at countless distance are also whirling--Mercury, Venus, Mars, Jupiter, Saturn, Uranus , Neptune and the iceworlds, not being universally called "planets" with information from all scientists because they did not evolve as the different planets did precisely. It takes 365 a million/4 image voltaic days, 24 hours lengthy each and each and every, for the Earth to finish that journey at a propose distance of ninety 3 million miles from the be certain solar, Sol, a G type center-sized yellow celeb. Earth itself has a huge satellite tv for pc whirling round it, the Moon, 240, 000 miles out. at the same time as the Earth strikes between a visual moon and the solar that causes a lunar eclipse; at the same time as the moon, a lot less commonly, travels between the Earth and the solar, that causes a image voltaic eclipse.

Answer 5

Takes about 25 days for The Sun to rotate once on its axis.
http://hypertextbook.com/facts/1999/RadhikaKapoor.shtml

Yes, most planets rotate. In fact, Neptune is rotating on its side. The North Pole (there) is about where our Equator is (here)

Mack

Answer 6

Yes it does, in about 27 days around its equator. However, the sun is not solid so different parts of it rotate at different speeds.

Answer 7

Yes it does.

The Sun rotates on its axis once in about 27 days.

Answer 8

Yes, the stars including our sun do revolve on an axis.