SPOILER: I think I am close to being done with the game, but I am stuck.

[Mikeyd1870]

The only thing I have left to discover is the Ash Twin Project. I have discovered the Vessel and also found the coordinates I need to input. Where I am stuck at is what do I do next? I know the warp core is shot and I have no idea how to repair it or find another one. Could anyone give me a hint or nudge in the right direction on where or what I need to do or go?

[Psymon²]

clues to combine:
1. the black hole at the centre of brittle hollow
2. the towers on the sandy of the hourglass twins

[76561199455560242]

Use your ship logs, it should hint where to search next. Everything you said tells me you know what to do, it's just a matter of finding it.

For a minor spoiler: try searching the ash twin when the sands are low

[Bobywan]

Have you completely explored Timber Hearth ? There is a clue there. More precisely in the Nomai Mines. Ther you should have found a clue telling you that The Nomai mined ore from this site to craft a protective shell designed to physically seal off the central chamber inside Ash Twin. The important part of this clue is that the ash twin project is sealed tight completely, no door to open to enter it
Is there another way to be transported from a place to another. Is there a specific location with lots of that ? In that place a location seems broken but it is not.

If you don't manage to use that broken location there are more clues that may help which are on another planet : brittle hollowmore preciselythe black hole forge The clue are:
-A warp tower’s alignment point is not its warp receiver. Rather, a warp tower always aligns with the center of its corresponding astral body.
-The warp reciever must be located on (or in close orbit around) the relevant astral body.
-The Hourglass Twins are so close together they function as a single astral body, with a shared alignment point in between them.
-All of the warp towers were being constructed on Ash Twin, while the six warp receivers were being constructed at different locations.

It's all a question of timing to use that "broken" teleporter

[Alfred Kodani]

This was the only (possibly second) thing I had to google for help, as there is little indication the intended path will work. Here are some more direct hints.

The ash-twin gate is on the ash-twin.
The twin gates activate together.
The sand funnel has an eye.

P.S. There are no "cracks" in the ash-twin project, despite what one entry led me to believe.

[GMC]

Originally posted by Mikeyd1870:

The only thing I have left to discover is the Ash Twin Project.
...
Where I am stuck at is what do I do next?

Find your way into the Ash Twin Project.