Astronomy Picture of the Day ·
GW190521: Unexpected Black Holes Collide
The Astronomy Picture of the Day for September 8, 2020 is “GW190521: Unexpected Black Holes Collide,” an image. It is credited to Illustration Credit: Raúl Rubio ( Virgo Valencia Group , The Virgo Collaboration ). The original explanation runs about 219 words.
From the explanation
“How do black holes like this form? The two black holes that spiraled together to produce the gravitational wave event GW190521 were not only the most massive black holes ever seen by LIGO and VIRGO so far, their masses — 66 and 85 solar masses — were unprecedented and unexpected.”
— APOD editors, September 8, 2020
Read the full explanation on science.nasa.gov
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At a glance
- Date
- September 8, 2020
- Type
- Image
- Credit
- Credit: Illustration Credit: Raúl Rubio ( Virgo Valencia Group , The Virgo Collaboration )
- Copyright
- No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
- Explanation length
- About 219 words