Where is the Corsair down spine and mist?

The Corsair Down transmission that is repeating something about a spine and mist is a clue for the Spine of Keres. It's the area where the observatory with the Oracle is. The area northwest of the observatory is made up of a bunch of spires and islands rising from the mist. That's where the bodies will spawn.

How do you gain access to the menagerie?

How to Unlock the Menagerie in Destiny 2

Go visit Benedict-44 in the Tower.
Go visit Werner 99-40 on Nessus.
Kill 10 Cabal.
Kill 25 Vex with melee damage.
Generate orbs, earn XP, and complete one challenge.
Locate the chest in the Well of Flame on Nessus.
Return to Werner 99-40.

Can you only do the menagerie once a week?

You can have up to 3 powerful rewards per week if you upraded power and effiency 2 . But you can run menagerie and get as many weapons/gears you want, as long you have runes?? they just wont be powerful. Also you can do it 3 times if you have more than 1 character.

What does heroic menagerie give you?

Special Heroic Menagerie Drops Players can still use their Chalice to craft armor or weapons, and catered the masterwork or damage resistance to their liking. However, upon completion of the first Heroic Menagerie of the week (per account), the crafted item will be fully masterworked.

Where is the Corsair down spine and mist?