Antennae Galaxies - Galactic collision (Prabhakaran)

Celestial hemisphere: Southern · Constellation: Corvus (Crv) · Contains: Antennae · Antennae Galaxies · NGC 4038 · NGC 4039

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Antennae Galaxies - Galactic collision

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Antennae Galaxies - Galactic collision

With so many galaxies in the universe, some of them are bound to collide. When they do, the result can be a titanic maelstrom of stars, gas, and spiral arms wrapping around one another, as shown here the Antennae Galaxies(NGC 4038 and NGC 4039), also known as the Ringtail Galaxy or Arp 244, are a pair of colliding galaxies located in the Corvus constellation. This wide view shows huge streams of gas and stars pulled out of the galaxies by gravitational tides and stretching away like giant insect antennae. A narrower view, meanwhile, shows the two galaxies locked in an embrace with huge dark clouds of dust spilling across their distorted faces. Although the collision between stars in these galaxies is unlikely but the vast clouds of molecular gas within the galaxies can’t avoid one another. And so they clash, sparking intense bursts of star formation, which are visible as pink blotches of ionized hydrogen embedded in the twisted spiral arms. Eventually, the two galaxies will coalesce to form a single giant elliptical galaxy, and their supermassive black holes will find one another and merge, unleashing a burst of gravitational waves as they do so. We’ll have to wait another 400 million years for that to happen, though.

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
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Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	4821517
PixInsight job	GM45F3ETJBPGNPYVR27D9PYSAJLXG62M
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	12h01m55s.640
RA (top/left)	12h01m06s.377
RA (top/right)	12h00m47s.762
RA (bottom/right)	12h02m43s.932
RA (bottom/left)	12h03m02s.174

Dec (center)	-18°52′38″.84
Dec (top/left)	-18°33′02″.23
Dec (top/right)	-19°08′53″.12
Dec (bottom/right)	-19°12′14″.30
Dec (bottom/left)	-18°36′23″.10

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Antennae Galaxies - Galactic collision

Antennae Galaxies - Galactic collision

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Antennae Galaxies - Galactic collision

Antennae Galaxies - Galactic collision

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