by Ann » Sun Jul 28, 2024 4:52 am
Well, the Sun dance is impressive, but...
The Sun is much more quiet than most other stars of its type!
New Atlas wrote:
To get a sense of how “normal” the Sun may be, astronomers have compared the Sun to hundreds of similar stars. It turns out that it’s actually far less active than its peers – but is this a permanent personality, or is it just going through a phase?
...
Using data from the Kepler and Gaia Space Telescopes, the team filtered the most Sun-like stars out of a catalogue of 150,000 main sequence stars. The main criterium was rotation period – the Sun rotates once every 24.5 days, so the researchers focused on stars with 20- to 30-day rotations. Then they narrowed down the list further by looking for stars with surface temperatures, ages and element ratios that most closely matched the Sun. In the end, they came up with 369 Sun-like stars to study.
To the surprise of the team, the Sun seems to be generally much quieter than most other stars. The Sun’s radiation fluctuates by just 0.07 percent between its active and inactive phases, while variations for other stars were usually five times stronger.
Perhaps the Sun's well-mannered behavior is another factor contributing to the life-friendliness of the Earth?
Ann
Oh, and... the number of posts I have right now, 13631, is a palindrome.
I think.
Well, the Sun dance is impressive, but...
The Sun is much more quiet than most other stars of its type! :shock: 🌞
[float=right][img3="The Sun's energy output compared to a typical similar star. Credit: MPS / hormesdesign.de"]https://assets.newatlas.com/dims4/default/f63b4cf/2147483647/strip/true/crop/1169x1169+0+0/resize/1200x1200!/quality/90/?url=http%3A%2F%2Fnewatlas-brightspot.s3.amazonaws.com%2Fe6%2Fa4%2F1f3cd61d42d7aabfa79bd17320ce%2Fsun-comparison.jpg[/img3][/float][quote][url=https://newatlas.com/space/sun-energy-comparison-other-stars/]New Atlas[/url] wrote:
To get a sense of how “normal” the Sun may be, astronomers have compared the Sun to hundreds of similar stars. It turns out that it’s actually far less active than its peers – but is this a permanent personality, or is it just going through a phase?
...
Using data from the Kepler and Gaia Space Telescopes, the team filtered the most Sun-like stars out of a catalogue of 150,000 main sequence stars. The main criterium was rotation period – the Sun rotates once every 24.5 days, so the researchers focused on stars with 20- to 30-day rotations. Then they narrowed down the list further by looking for stars with surface temperatures, ages and element ratios that most closely matched the Sun. In the end, they came up with 369 Sun-like stars to study.
To the surprise of the team, the Sun seems to be generally much quieter than most other stars. The Sun’s radiation fluctuates by just 0.07 percent between its active and inactive phases, while variations for other stars were usually five times stronger.[/quote]
Perhaps the Sun's well-mannered behavior is another factor contributing to the life-friendliness of the Earth? 🌎
Ann
Oh, and... the number of posts I have right now, 13631, is a palindrome. :mrgreen: I think.