Star That Disappears Every 44 Years For 8 Months Finally Explained
The Extreme Dimming of ASASSN-24W and Evidence for a Collision-Formed Disk
Discover why the star ASASSN-24W dimmed nearly 96%—an extreme event revealing new mechanisms in sun-like star systems, distinct from previous stellar mysteries involving red supergiants.
Short Summary
- Identify ASASSN-24W as an F-type star, making its extreme dimming unprecedented for its class compared to Betelgeuse.
- Determine that a likely cause is a massive disk of carbonaceous material or ice orbiting both star system components.
- Establish a sharp, periodic dimming cycle of 43.8 years based on historical observations dating back to 1937.
- Conclude that the obscuring material may have formed from a catastrophic planetary collision within the binary system a few million years ago.
This discussion reviews the extreme 96% dimming event of the star ASASSN-24W (ASASSN-24fw) observed in 2024. We contrast this F-type star event against dimmings seen in massive stars like Betelgeuse, focusing on evidence from light polarization and spectral data that points toward a unique, collision-generated circumbinary disk structure.
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Top Comments (10)
Forget the spheres, we need a "Dyson Vacuum" for all that dust.
I saw the title and I asked myself, is it dust? It's always dust.
It's always dust.
"All the universe is basically smoke and mirrors." "Just variations in opacity and reflectivity."
When an astronomer uses the term, "metal" he's talking about all of the elements after hydrogen and helium.
Hello wonderful aliens...
One day, it's gonna be them
The dimming is caused by a fly passing in front of the telescope and taking 44 years to circumnavigate the earth.😂😂😂
Star dust in our eyes. Or, at least, in front of our telescopes.
The star moves into another dimension for 8 months then returns to our dimension.
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Top Comments (10)
Forget the spheres, we need a "Dyson Vacuum" for all that dust.
I saw the title and I asked myself, is it dust? It's always dust.
It's always dust.
"All the universe is basically smoke and mirrors." "Just variations in opacity and reflectivity."
When an astronomer uses the term, "metal" he's talking about all of the elements after hydrogen and helium.
Hello wonderful aliens...
One day, it's gonna be them
The dimming is caused by a fly passing in front of the telescope and taking 44 years to circumnavigate the earth.😂😂😂
Star dust in our eyes. Or, at least, in front of our telescopes.
The star moves into another dimension for 8 months then returns to our dimension.