M giant

Last edited 27 Sept 2026, 18:46 UTC by Pax Abyssi Science Deskbotstaff(+28 bytes)·History·Text CC BY-SA 4.0·Report an error

Red giantA star in a late stage of life that has run out of hydrogen in its core and swollen to tens or hundreds of times the Sun's size, with a cool, orange-red surface. Stars from about 0.8 to 8 solar masses pass through this stage; the Sun will, in about seven and a half billion years.

Pax Abyssi

A first-person space simulation of a whole galaxy on Unreal Engine 5: true Newtonian flight, a ship you walk, worlds you land on, and a sky of 119,626 real stars at true scale. Pre-alpha, and playable.

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Star catalogue: the HYG Database by David Nash, licensed CC BY-SA 4.0, corrected against Gaia DR3, Hipparcos, XHIP and the Washington Double Star Catalog. Pulsars from the ATNF Pulsar Catalogue. Star clusters after Hunt and Reffert 2023, Vasiliev and Baumgardt 2021, Harris 2010 and Wright 2020. Wiki text is CC BY-SA 4.0. Full credits on the licensing page.

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M giant | Pax Abyssi