antares star size

Using the Very Large Array (or VLA) in New Mexico, which sees in radio light, they also measured a layer in Antares above that called the wind acceleration zone.
But new observations show that other parts of it extend well beyond that. Antares A; an LC type variable red giant star, and Antares B, a class B2.5V blue main sequence star, make up a binary star system in the Scorpius constellation. on Twitter, Share Wait. Battlestar Galactica cast share their favorite scenes, which still turn on the waterworks, Terminator: Dark Fate and the American tradition of dehumanization, Share Wait. Volume of Antares, lowermost (the exact size of Antares is uncertain, but its estimated radius is between 680 and 800 solar radii = 293,760,000 miles) 6. It's easy enough to see now (literally; it's up high in the south for northern hemisphere people after the sky gets dark), but just wait until it goes all supernova on us. on Facebook, Share Wait. Fixed star Antares represents one of the important four Archangels stars. The parts of a star you see depend on how you look at it. That's why, even though it's something like 500 light years away it's still one of the brightest stars in the night sky, an angry red beacon sometimes called "The Heart of the Scorpion" due to its location in the constellation of Scorpius. On this scale, the Sun is much smaller than a pixel. Sun in comparison to Antares. But Betelgeuse may be 25% closer to Earth than we previously thought, But new observations show that other parts of it extend well beyond that, astronomers measured the chromosphere of Antares, ALMA (ESO/NAOJ/NRAO), E. O’Gorman; NRAO/AUI/NSF, S. Dagnello, that has caused some excitement about the red supergiant Betelgeuse recently. We don't really understand how the winds from red supergiants are accelerated, for one. After that it will fade as the debris expands, eventually becoming invisible to the eye (which you may already know if you read xkcd). That star is hot and bright enough to illuminate the wind of gas blowing past it from its much larger primary star, and that can be seen in the VLA images as well.

Submitted for the approval: Everything you didn't know about Are You Afraid of the Dark? Stars are immense objects.
This part was seen out to six times the size of the photosphere, a radius of nearly 3 billion km, and the wind itself traced out to double that distance! But there are bigger stars yet. Naturally, the outer edges of Antares’ atmosphere are particularly rarefied. The Sun's chromosphere is about 3000 – 5000 km deep (less than 1% of the Sun's radius). Mind you, red supergiants eventually explode as supernovae, so that's a fairly important reason to figure out what's going here. If you include its chromosphere, wind acceleration zone, and lower part of its wind, it reaches out to a staggering 12 billion kilometers! That star is hot and bright enough to illuminate the wind of gas blowing past it from its much larger primary star… Antares is a binary star, and its companion star is a beast, with a mass 7 times the Sun's, and shining over 2,500 times as bright as the Sun. Its photosphere — the part you'd call the surface as seen by eye — is nearly a billion kilometers in diameter, and would reach well past the orbit of Mars if it were in the center of our solar system.

Antares / æ n ˈ t ɛər iː z /, designated α Scorpii (Latinised to Alpha Scorpii, abbreviated Alpha Sco, α Sco), is on average the fifteenth-brightest star in the night sky, and the brightest object in the constellation of Scorpius.Distinctly reddish when viewed with the naked eye, Antares is a slow irregular variable star that ranges in brightness from apparent magnitude +0.6 to +1.6. Note that it VY Canus Majoris is the biggest in size but not mass. That's what we normally think of as the "surface" of the Sun. We toss around words like "big" and "huge" all the time, but what does this mean on a human scale? Marvel at its brightness, its ruddy hue, and know that it's bigger than whole solar systems… but also that there's much more to learn about it. Vast. Antares is only 15 times more massive but 680 times as large as the sun. Add the fact that Antares disperses some gases out into space via its stellar wind, and you can see just what a challenge it is for astronomers to gauge its diameter.

*How* big is Antares? Credit: ALMA (ESO/NAOJ/NRAO), E. O’Gorman; NRAO/AUI/NSF, S. Dagnello.

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