It is quite rare that planetary nebulae house Earth-like planets that survived the star's cataclysm and are still habitable. Out of the 5,510 known planetary nebulae (as of 3311. December), only 40 have such worlds. This planetary nebula in particular is the only one that houses not just one, but two such worlds. One of them is even a moon of another planet.

This 1 a moon is the first Earth-like in the system, and it's not a warm place: its average surface temperature is only 260 K, which is the limit of habitability as defined by Universal Cartographics. Thankfully, the moon's other characteristics are nowhere near as "uncomfortable". There is one thing that stands out from them though: the nights on this planet are still relatively bright (as seen in the image above), thanks to the nebula reflecting the light of the neutron star of this system. As this system is around the edge of the galactic core, the sky is filled with stars, too.

The picture above shows the moon's parent, a High Metal Content world where the greenhouse effect of water vapour led to the planet having an incredibly high surface pressure (21,700 atm) and temperature (1,763 K).

On the other hand, it is the same greenhouse effect that has made the second planet of this system habitable.

At a distance of 2.7 kls from the star (compared to 2 kls of 1 a), this planet might not have been warm enough to be habitable without the warming effect. However, its atmosphere contains water vapour at a high enough percentage (4.45%, with a surface pressure of 0.67 atm) that the surface is significantly warmer than its sibling: at an average temperature of 306 K, it sits near the maximum considered to be habitable (320 K), rather than the minimum that its sibling is at.

Compared to that moon, this planet's night sky is considerably darker (although it would still be something of a stretch to call it dark), and living here would be quite different. This is not just because of the temperature differences; the gravity is much higher here (1.2 g versus 0.66 g there) and days take longer. Both worlds have long years, which is not surprising for a system like this. However, since neither have an axial tilt to speak of, that doesn't make as much of a difference.
Besides, if this system were ever colonized, then people could easily move from one Earth-like world to the other if they found they can't bear its surface conditions.

The other planets of the nebula are quite unremarkable. Thanks to the system's location around the galactic core, there are plenty of sights to see and places to discover nearby, and the nearest star is only 1.19 ly away. Here is how the cloud looks when viewed from there:

It is quite rare that planetary nebulae house Earth-like planets that survived the star's cataclysm and are still habitable. Out of the 5,510 known planetary nebulae (as of 3311. December), only 40 have such worlds. This planetary nebula in particular is the only one that houses not just one, but two such worlds. One of them is even a moon of another planet.

This 1 a moon is the first Earth-like in the system, and it's not a warm place: its average surface temperature is only 260 K, which is the limit of habitability as defined by Universal Cartographics. Thankfully, the moon's other characteristics are nowhere near as "uncomfortable". There is one thing that stands out from them though: the nights on this planet are still relatively bright (as seen in the image above), thanks to the nebula reflecting the light of the neutron star of this system. As this system is around the edge of the galactic core, the sky is filled with stars, too.

The picture above also shows the moon's parent (to the right), which is a High Metal Content world where the greenhouse effect of water vapour led to the planet having an incredibly high surface pressure (21,700 atm) and temperature (1,763 K).

On the other hand, it is the same greenhouse effect that has made the second planet of this system habitable.

At a distance of 2.7 kls from the star (compared to 2 kls of 1 a), this planet might not have been warm enough to be habitable without the warming effect. However, its atmosphere contains water vapour at a high enough percentage (4.45%, with a surface pressure of 0.67 atm) that the surface is significantly warmer than its sibling: at an average temperature of 306 K, it sits near the maximum considered to be habitable (320 K), rather than the minimum that its sibling is at.

Compared to that moon, this planet's night sky is considerably darker (although it would still be something of a stretch to call it dark), and living here would be quite different. This is not just because of the temperature differences; the gravity is much higher here (1.2 g versus 0.66 g there) and days take longer. Both worlds have long years, which is not surprising for a system like this. However, since neither have an axial tilt to speak of, that doesn't make as much of a difference.
Besides, if this system were ever colonized, then people could easily move from one Earth-like world to the other if they found they can't bear its surface conditions.

The other planets of the nebula are quite unremarkable. Thanks to the system's location around the galactic core, there are plenty of sights to see and places to discover nearby, and the nearest star is only 1.19 ly away. Here is how the cloud looks when viewed from there: