Sunday, June 25, 2017
Contact us    |    Advertise    |   Help   RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in
This news story is archived which means that, while it is still available to view, the information contained within may be outdated and the original source site/link may no longer be viewable.

For the most recent stories, please visit either the site's home page or main news section.

Why is the sun so perfectly round ?

Posted on Saturday, 18 August, 2012 | Comment icon 18 comments | News tip by: Karlis


Image credit: sxc.hu

 
It's hot, it's bright and it also happens to be one of the most pefectly round things ever measured.

Jeff Kuhn and Isabelle Scholl of the University of Hawaii set out on a mission to investigate by using the Helioseismic and Magnetic Imager onboard the Solar Dynamics Observatory satellite. What they found was that if the sun were to be shrunk to the size of a ball one meter in diameter it would be only 17 millionths of a meter out from a perfect sphere.

"For years we've believed our fluctuating measurements were telling us that the sun varies, but these new results say something different," said Kuhn. "While just about everything else in the sun changes along with its 11-year sunspot cycle, the shape doesn't."

"The sun is nearly the roundest object ever measured."

  View: Full article

 Source: Science Daily


  Discuss: View comments (18)

   


 
Recent comments on this story
Comment icon #9 Posted by notoverrated on 20 August, 2012, 2:30
this doesn't surprise me.
Comment icon #10 Posted by woopypooky on 20 August, 2012, 3:40
still not a 100% perfect circle.it shows you that God are not perfect
Comment icon #11 Posted by ZaraKitty on 20 August, 2012, 4:11
It's a huge ball of gas (paraphrasing btw) I see no reason for it to compress, do you know how hard it to to compress gas?!?!
Comment icon #12 Posted by Likely Guy on 20 August, 2012, 5:16
The sun is nearly the roundest object ever measured. If scaled to the size of a beach ball, it would be so round that the difference between the widest and narrow diameters would be much less than the width of a human hair. Yes. But if the Sun was the size of a beachball, the Earth would be the size of a pea. Then, how thick would a human hair be? Or, at the other end of the scale, since the Sun is not a beachball, how wide would the human hair have to be? 1 km? 10 kms? 100 kms? ...and how big would the human be? /i'm not expecting an answer to those questions, by the way. i know that a human ... [More]
Comment icon #13 Posted by AmishHacker on 20 August, 2012, 9:30
The Sun's size and mass make this discovery somewhat unsurprising. Much of the comparison is made with Jupiter's bulge, but Jupiter spins rapidly, is much smaller, and is less massive than the Sun. Its mass, by comparison, is 1.989x1030 while Jupiter's mass is only 1.898x1027 or less than 0.001 the mass of the Sun. I wonder if the Sun's nuclear fusion process has anything to do with balancing its shape. To me, this discovery falls in line with similar discoveries about our own world, especially our place in the HZ. Its just, for lack of a better term, perfect. :-) AmishHacker
Comment icon #14 Posted by The Mule on 20 August, 2012, 23:02
I'm no rocket appliance, but I'm gonna go with ....if its gravitational force is enough to keep 9 (maybe) planets in orbit...maybe its gravity is strong enough to negate the spinning bulge. But then again...Im just a mule and cant figure out how any of it affects my life. I for one would rather have the stumped scientists work on something like ending world hunger or curing cancer.
Comment icon #15 Posted by pallidin on 24 August, 2012, 4:17
I'm no rocket appliance, but I'm gonna go with ....if its gravitational force is enough to keep 9 (maybe) planets in orbit...maybe its gravity is strong enough to negate the spinning bulge. But then again...Im just a mule and cant figure out how any of it affects my life. I for one would rather have the stumped scientists work on something like ending world hunger or curing cancer. Well, it would affect your life if the Sun has a sudden hernia.
Comment icon #16 Posted by The Mule on 24 August, 2012, 11:00
Well, it would affect your life if the Sun has a sudden hernia. Well...true! But what i meant was that the sun's gonna do whatever it pleases. If it decides to have a hernia or a hiccup, knowing how why and when isn't really gonna stop it from happening or save my muley hide.
Comment icon #17 Posted by Nasty Gash on 25 August, 2012, 18:20
I am sure the gravity pushing inward and nuclear fusion pressure pushing outward causes balance and perfection. If pressure is leaving from core outward and gravity is pushing hard on the outside then imperfections should get corrected automatically and a smooth balance should exist. Look at white dwarfs and high gravity objects, i am prettys sure they are perfectly round. You're assuming that the two forces are equal and that there are no other forces in play. This is not the case. The Sun's diameter is dependent upon the partial pressures of all its constituent gases (total pressure), the ra... [More]
Comment icon #18 Posted by ArcticDaystar14 on 30 August, 2012, 17:33
Well then can someone give or email me a picture of what an actual perfectly round circle/sphere looks like? I can't be told a conclusion with little evidence? EmbryoRothstrikes


Please Login or Register to post a comment.


  On the forums
Forum posts:
Forum topics:
Members:

5932108
255186
167803

 
Could the universe itself be conscious ?
6-25-2017
The idea that the cosmos may be self-aware has intrigued scientists and philosophers for centuries.
Scientists crack mystery of avian egg shape
6-24-2017
Researchers have finally worked out why some bird eggs are rounder while others are more pointy.
Magnetic beam could dispose of old satellites
6-24-2017
A French scientist is working on a novel new way to keep Earth's orbit clear of defunct satellites.
UK UFO files have finally been released
6-24-2017
The National Archives has published a collection of 15 Ministry of Defence files on the subject of UFOs.
Other news in this category
Could the universe itself be conscious ?
Posted 6-25-2017 | 4 comments
The idea that the cosmos may be self-aware has intrigued scientists and philosophers for centuries....
 
Magnetic beam could dispose of old satellites
Posted 6-24-2017 | 2 comments
A French scientist is working on a novel new way to keep Earth's orbit clear of defunct satellites....
 
Mysterious Mars-sized 'Planet Ten' proposed
Posted 6-23-2017 | 7 comments
Astronomers have suggested that there may be more than one mystery planet in the outer solar system....
 
PLATO mission to hunt for Earth-like worlds
Posted 6-22-2017 | 2 comments
ESA is set to launch a new satellite that will seek out potentially habitable extrasolar planets....
 
'Star Chip' could reach Earth 2.0 in 20 years
Posted 6-21-2017 | 19 comments
Stephen Hawking is hoping to send a space probe to a potentially habitable world around Alpha Centauri....
 
NASA discovers 10 near-Earth size exoplanets
Posted 6-19-2017 | 13 comments
Scientists believe that these new worlds lie in the 'Goldilocks zone' of their respective solar systems....
 
Elon Musk reveals vision for city on Mars
Posted 6-15-2017 | 10 comments
The SpaceX CEO has been working towards his goal of seeing mankind become an interplanetary species....
 
Did the Sun once have a companion star ?
Posted 6-14-2017 | 8 comments
New evidence has suggested that all the sunlike stars in the universe may have formed together in pairs....
 
Space nation 'Asgardia' set to launch probe
Posted 6-13-2017 | 3 comments
The so-called 'first nation state in space' is about to make its first foray in to the final frontier....
 
NASA reveals 'Batmobile' concept Mars rover
Posted 6-9-2017 | 5 comments
The futuristic vehicle, which is designed to operate on Mars, was unveiled at the Kennedy Space Center....
 
Astronauts could bake their own bread in space
Posted 6-8-2017 | 3 comments
A new type of crumb-free dough mixture could help to improve the selection of foods available in space....
 

 View: More news in this category
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.7 Unexplained-Mysteries.com © 2001-2017
Privacy Policy and Disclaimer   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ