Posted on Apr 11, 2021
APOD: 2021 April 11 - When Black Holes Collide
1.18K
105
15
25
25
0
Good morning, Rallypoint. Today's Astronomy Picture of the Day (APOD) is titled "When Black Holes Collide." Some of the most innovative work in astronomy is being accomplished in the field of interferometry: the study of gravitational waves. You may recall that gravity is one of the four fundamental physical forces (the other three being electromagnetism, the strong nuclear force, and the weak nuclear force). We can't see gravitational waves themselves, but we can observe their effects. These are the "ripples" in space and time that were predicted by Einstein in 1916.
Notice the "rings" around the the two black holes in this 16-second video clip. When light passes an object of sufficient mass (like a black hole), its path is 'bent' by gravity - making it look like it comes from a different place than expected. This effect is called gravitational lensing. When the source, lense, and observer (e.g. us) are in alignment, the full effect is called an Einstein ring. Through interferometry, we have a useful tool for better understanding the mechanics of the Universe we live in.
Notice the "rings" around the the two black holes in this 16-second video clip. When light passes an object of sufficient mass (like a black hole), its path is 'bent' by gravity - making it look like it comes from a different place than expected. This effect is called gravitational lensing. When the source, lense, and observer (e.g. us) are in alignment, the full effect is called an Einstein ring. Through interferometry, we have a useful tool for better understanding the mechanics of the Universe we live in.
APOD: 2021 April 11 - When Black Holes Collide
Posted from apod.nasa.gov
NASA
Space
Science
Photography
Astronomy
Posted >1 y ago
Responses: 10
14
14
0
Headland - When Stars Collide (Official Music Video)
Headland - When Stars Collide (Official Music Video)'When Stars Collide' is from the new EP "The Craic" - Stream or buy it now: http://hyperurl.co/pi1h58Song...
Thank you my friend Maj William W. 'Bill' Price for posting the NASA Astronomy Video Clip of the Day (AVCOD) is titled "When Black Holes Collide."
Video clip: When Black Holes Collide - Video Credit & Copyright: Simulating Extreme Spacetimes Collaboration
Since the LORD is in complete control of creations, those of us with eyes to see and ears to hear HIM recognize that if black holes collide or merge HE is the author.
Images:
1. NASA Simulates Two Supermassive Black Holes Spiraling Toward a Collision
2. Artists impression of two black holes merging
3. Artist’s impression of supermassive Black Hole collision - Mark Myers
AVCOD background
"Explanation: What happens when two black holes collide? This extreme scenario occurs in the centers of many merging galaxies and multiple star systems. The featured video shows a computer animation of the final stages of such a merger, while highlighting the gravitational lensing effects that would appear on a background starfield. The black regions indicate the event horizons of the dynamic duo, while a surrounding ring of shifting background stars indicates the position of their combined Einstein ring. All background stars not only have images visible outside of this Einstein ring, but also have one or more companion images visible on the inside. Eventually the two black holes coalesce. The end stages of such a merger is now known to produce a strong blast of gravitational radiation, providing a new way to see our universe."
Headland - When Stars Collide (Official Music Video)
https://www.youtube.com/watch?v=Et86sxcigAc
FYI COL Mikel J. Burroughs SMSgt Lawrence McCarter Lt Col John (Jack) Christensen LTC (Join to see) SCPO Morris Ramsey MAJ Dale E. Wilson, Ph.D. Maj Bill Smith, Ph.D. Sgt Albert Castro PO1 William "Chip" Nagel SSG Samuel Kermon SSG Franklin Briant SP5 Geoffrey Vannerson SMSgt David A Asbury A1C Riley SandersSPC Michael Oles SR TSgt David L. Maj Marty Hogan SMSgt Tom Burns Sgt John H.
Video clip: When Black Holes Collide - Video Credit & Copyright: Simulating Extreme Spacetimes Collaboration
Since the LORD is in complete control of creations, those of us with eyes to see and ears to hear HIM recognize that if black holes collide or merge HE is the author.
Images:
1. NASA Simulates Two Supermassive Black Holes Spiraling Toward a Collision
2. Artists impression of two black holes merging
3. Artist’s impression of supermassive Black Hole collision - Mark Myers
AVCOD background
"Explanation: What happens when two black holes collide? This extreme scenario occurs in the centers of many merging galaxies and multiple star systems. The featured video shows a computer animation of the final stages of such a merger, while highlighting the gravitational lensing effects that would appear on a background starfield. The black regions indicate the event horizons of the dynamic duo, while a surrounding ring of shifting background stars indicates the position of their combined Einstein ring. All background stars not only have images visible outside of this Einstein ring, but also have one or more companion images visible on the inside. Eventually the two black holes coalesce. The end stages of such a merger is now known to produce a strong blast of gravitational radiation, providing a new way to see our universe."
Headland - When Stars Collide (Official Music Video)
https://www.youtube.com/watch?v=Et86sxcigAc
FYI COL Mikel J. Burroughs SMSgt Lawrence McCarter Lt Col John (Jack) Christensen LTC (Join to see) SCPO Morris Ramsey MAJ Dale E. Wilson, Ph.D. Maj Bill Smith, Ph.D. Sgt Albert Castro PO1 William "Chip" Nagel SSG Samuel Kermon SSG Franklin Briant SP5 Geoffrey Vannerson SMSgt David A Asbury A1C Riley SandersSPC Michael Oles SR TSgt David L. Maj Marty Hogan SMSgt Tom Burns Sgt John H.
(14)
(0)
LTC Stephen F.
The heavens declare Thy glory, Lord (Psalm 19) (Metropolitan Tabernacle)
Sung during the Sunday worship at the Metropolitan Tabernacle, London (Spurgeon's). Hymn 19 version 1 (based on Psalm 19) from our hymn book, Psalms & Hymns ...
The heavens declare Thy glory, Lord (Psalm 19) (Metropolitan Tabernacle)
Sung during the Sunday worship at the Metropolitan Tabernacle, London (Spurgeon's).
Hymn 19 version 1 (based on Psalm 19) from our hymn book, Psalms & Hymns of Reformed Worship.
https://www.youtube.com/watch?v=p-ipI9gFPrE
FYI CSM Bruce TregoSPC Woody Bullard CPL Douglas ChryslerCpl (Join to see) SFC William Farrell SPC Michael TerrellSSG Paul Headlee SPC Michael Duricko, Ph.D SSG Michael Noll SPC Randy Zimmerman Sgt Albert Castro Sgt Vance Bonds Cpl Vic Burk PO1 H Gene Lawrence Maj William W. 'Bill' Price SSgt Clare May SPC Diana D. Capt Christian D. Orr SP5 Gary Nelson SSG Bill McCoy
Sung during the Sunday worship at the Metropolitan Tabernacle, London (Spurgeon's).
Hymn 19 version 1 (based on Psalm 19) from our hymn book, Psalms & Hymns of Reformed Worship.
https://www.youtube.com/watch?v=p-ipI9gFPrE
FYI CSM Bruce TregoSPC Woody Bullard CPL Douglas ChryslerCpl (Join to see) SFC William Farrell SPC Michael TerrellSSG Paul Headlee SPC Michael Duricko, Ph.D SSG Michael Noll SPC Randy Zimmerman Sgt Albert Castro Sgt Vance Bonds Cpl Vic Burk PO1 H Gene Lawrence Maj William W. 'Bill' Price SSgt Clare May SPC Diana D. Capt Christian D. Orr SP5 Gary Nelson SSG Bill McCoy
(9)
(0)
10
10
0
Maj William W. 'Bill' Price The video looks like my toilet flushing , or my sink drain when I empty the sink.
(10)
(0)
Read This Next
Continue with Facebook 
Continue with Google