The star Antares and M4 (Garillan)

Celestial hemisphere: Southern · Constellation: Scorpius (Sco) · Contains: 20 Sco) · 21 Sco) · 22 Sco · Al Niyat (σ Sco · Alniyat I · Cor Scorpii · IC 4603 · IC 4605 · Kalb al Akrab (α Sco · M 4 · NGC 6121 · NGC 6144 · The star Alniyat · The star Antares · The star i Sco · Vespertilio

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The star Antares and M4

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The star Antares and M4

The star Antares is a red supergiant, which has a diameter of about 700 times that of the Sun and a mass of about 15 times that of the Sun. Its surface temperature is about 3,500 K, which gives it its reddish color.

Antares is a variable star, changing its brightness periodically. Its apparent magnitude ranges between 0.6 and 1.6, making it one of the brightest stars in the night sky.

Antares is located about 550 light years away from Earth. The gases surrounding Antares are the result of its strong stellar wind, which expels material from its surface at high speed.

This material forms a nebula around the star, extending for about 4 light years. The nebula has an irregular and asymmetric shape, and shows different colors depending on the type of gas and the radiation that illuminates it. The nebula mainly contains hydrogen, helium, carbon, nitrogen and oxygen.

The Antares Nebula is an object of great scientific interest, as it allows us to study the evolution and fate of massive stars. Antares is in an advanced stage of its life, and is expected to explode as a supernova within a few million years. Its explosion will be so bright that it can be seen with the naked eye from Earth, and will create a new, larger and more complex nebula.

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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.

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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.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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The star Antares and M4

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