our sun compared to other stars

But we’ve only got started. It is conceivable that the Sun has been going through a quiet phase for thousands of years and that we therefore have a distorted picture of our star.". This is where other stars come in. Another possibility is that stars can fluctuate between activity levels, and the Sun just hasn’t exhibited rowdy behaviour recently. © ScienceAlert Pty Ltd. All rights reserved. Discuss: Astronomers prove our sun is lazy and boring compared with other stars, published in the journal Science on Thursday, NASA solar mission spots wild threads woven into the sun's atmosphere, NASA to launch fleet of tiny spacecraft to study monster sun storms. Interview: Jessica Reynolds (The Curse of Audrey Earnshaw), Howard Bloom “Space Solar Power – The Solution To Man-Made Climate Change”, The Highly Anticipated Documentary “The Grand Unified Theory Of Howard Bloom” Available July 21st, 2020, “Nights After NAMM” Goes To The Dark Side For Charity, Subscription-based social network MeWe launches premium features and a business product, Coral raises $4.3M to build an at-home manicure machine. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Please Donate no matter how small. Dorset Eye is a free community resource our existence and longevity is dependent upon the goodwill of our readers and supporters. This is where other stars come in. The concentration of various elements in tree rings, ice cores and the fossil record can be interpreted to understand how the Sun has changed over time. But future observations with even more sensitive instruments could help pony up some answers. Comparing the largest star with our Sun, when you’re on the beach. The composition of stars depends on the atmospheric pressure when a star is born. Another possibility is that stars can fluctuate between activity levels, and the Sun just hasn't exhibited rowdy behaviour recently. However, since the star has been relatively quiet for at least 9,000 years, the timescales for such fluctuations are probably quite long in human terms. Now, I’m going to draw a circle next to it. In fact, our sun is classified as a G2 dwarf star. That suggests it could do so in the future; given that a rambunctious Sun can negatively impact communications, navigation, satellites and even power grids, that's a worrying thought. It could be that there are fundamental differences between stars with known and stars with unknown rotation rates. Understanding how this activity changes is a powerful tool for predicting the Sun's future. Our Sun itself is a huge (or medium sized) star, but is much smaller while compared to many other stars. That suggests it could do so in the future; given that a rambunctious Sun can negatively impact communications, navigation, satellites and even power grids, that's a worrying thought. Then, they compared the brightness variability of those stars as recorded by Kepler against the brightness variability of the Sun. And Sirius is dwarfed by Pollux, which is eight times the radius of the sun… It appears larger than other stars because it is the closest star to the Earth. "According to this interpretation, the periodic stars are in the high-activity regime, whereas the stars without known periods are either also in transition or are in the low-activity regime.". Red supergiants dwarf the Sun. Given how closely we study it, it would be tempting to think of it as a typical example of a G-type main-sequence star, or yellow dwarf. For a broader comparison, the team measured the Sun against 2,500 stars with unknown rotation rates – and in this case, the Sun seemed much more normal. Given how closely we study it, it would be tempting to think of it as a typical example of a G-type main-sequence star, or yellow dwarf. Eventually - after about 11 years - the magnetic field snaps back into alignment, the poles flip and it goes back into a quiet period. New research suggests that this is not the case. Please help us to deliver independent citizen news... by clicking the link below and contributing. Eventually – after about 11 years – the magnetic field snaps back into alignment, the poles flip and it goes back into a quiet period. We're pretty familiar with our Sun. After all, it has a diameter of approximately 864,400 miles (1,391,000km), which is 109 times the diameter of the Earth. (The Sun’s rotation period is 24.5 days.) Thank you. "Compared to the entire lifespan of the Sun, 9,000 years is like the blink of an eye," said astrophysicist Timo Reinhold of the Max Planck Institute for Solar System Research (MPS) in Germany. We're pretty familiar with our Sun. "It is just as conceivable that stars with known and sun-like rotation periods show us the fundamental fluctuations in activity the sun is capable of," Shapiro said. The age of stars vary throughout the universe and they also vary in size. However, even taking on board a realistic margin of error, we still get a pretty good idea of just how massive some of these stars are. Typically, other stars fluctuated by five times as much as the Sun. And we actually have a really powerful tool at our disposal for understanding solar activity over the past. The results were clear. Another possibility is that stars can fluctuate between activity levels, and the Sun just hasn't exhibited rowdy behaviour recently. And thanks to the Kepler space telescope, we have really detailed data. You have entered an incorrect email address! That's Earth itself. This website uses cookies to improve your experience while you navigate through the website. Typically, other stars fluctuated by five times as much as the Sun. It's simply in a more feeble phase at present. It studied a patch of sky for four years, allowing astronomers to calculate the rotation rates of tens of thousands of stars in its field of view, recording the faint dips in brightness associated with a sunspot appearing and disappearing from view. Betelgeuse is also about 14,000 times brighter than the Sun. 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Necessary cookies are absolutely essential for the website to function properly. Like Betelgeuse, it is also a red supergiant. "Compared to the entire lifespan of the Sun, 9,000 years is like the blink of an eye," said astrophysicist Timo Reinhold of the Max Planck Institute for Solar System Research (MPS) in Germany. To be sustainable Dorset Eye needs your support. There's no way, at present, to tell which of these scenarios is more likely. From the Kepler data, the researchers selected stars with rotation periods between 20 and 30 days. And thanks to the Kepler space telescope, we have really detailed data. But far back in the distant past, it’s harder to gauge whether the Sun behaved differently, and whether its current activity level is temporary. From the Kepler data, the researchers selected stars with rotation periods between 20 and 30 days. But far back in the distant past, it's harder to gauge whether the Sun behaved differently, and whether its current activity level is temporary. A new study, published in the journal Science on Thursday by researchers from the Max Planck Institute for Solar System Research (MPS), reveals our sun is approximately five times weaker than other sun-like stars in the universe. 0. But because the equator spins faster than the poles, it pulls the magnetic field out of shape. EY Scuti comes in at a massive, wait for it, 1708 solar radii. "After all, our star is almost 4.6 billion years old. It's difficult to know precisely what this means. After conducting a survey of stars similar to the Sun, scientists have discovered that our star is unusually subdued, at least at this stage of its life. We've even sent a probe to go study it; we haven't done that with any other star. Show full articles without "Continue Reading" button for {0} hours. It’s difficult to know precisely what this means. 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