@@ -6,9 +6,20 @@ template = "doc.html"
6category = "arvo"
6category = "arvo"
9−A **comet** is a kind of [ship](../ship) on the [Arvo](../arvo) network. They are disposable identities that will not be initially trusted by others on the network. One use might be to run bots as comets.
9+A **comet** is a kind of [ship](../ship) on the [Arvo](../arvo) network. They
10+are free identities for which we encourage new users to boot to try things out
11+before deciding to purchase a [planet](..planet).
13+Comets have nearly all the same capabilities as a planet. The exceptions are:
14+ - They may not spawn [moons](../moon).
15+ - They may not [change their networking keys](../bridge).
16+ - They must initiate all direct messages with other ships.
18+ The last limitation is technical and a workaround is slated. It also implies
19+ that comets may not initiate DM's with one another.
11−Comets have no presence on [Azimuth](../azimuth) and thus have no associated Urbit identities.
21+Comets have no presence on [Azimuth](../azimuth). Some groups on
22+[Landscape](../landscape) may not allow comet membership, but this is rare.
13### Further reading
24### Further reading