* Mass: Antares' mass of 3.08 x 10^31 kg is significantly larger than our Sun's mass (1.989 × 10^30 kg). Stars with this much mass evolve into red supergiants.

* Spectral Type: Antares is classified as an M1.5Iab star. "M" indicates a red color, "I" indicates it is a supergiant, and "ab" indicates its luminosity class.

Key characteristics of red supergiants:

* Large Size: They are vastly larger than our Sun, sometimes hundreds of times bigger.

* Cool Surface: They have relatively cool surface temperatures, hence the red color.

* Short Lifespan: Massive stars like Antares have much shorter lifespans than smaller stars, burning through their fuel much faster.

* End Stage: Red supergiants are nearing the end of their lives and will eventually explode as supernovae.

So, based on its mass and spectral classification, Antares is definitively a red supergiant star.